ANSI 221.45 1995

FLEXIBLE CONNECTORS OF OTHER THAN ALLIMETAL CONSTRUCTION FOR GAS APPLIANCES

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IAS/A.G.A. Z 2 1 - 4 5 95 = 0686780 0018181 139

Sixth Edition - 1995

Printed in U.SA

by

American Gas Association Laboratories 8501 East Pleasant Valley Road

Cleveland, Ohio 44131

Approved March 10,1995

AMERICAN NATIONAL STANDARDS INSTITUTE, INC.

Copyright O 1995, American Gas Association

Permission is granted t o republish material herein in laws or ordinances, and in regulations, administrative orders, or similar documents issued by public authorities. Those desiring permission for other republication should consult the American Gas Association Laboratories, 8501 East Pleasant Valley Road, Cleveland, Ohio 44131.

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I A S / A - G * A * Z2L-45 95 0686780 OOLBL82 075 =

This publication represents a standard for substantial and durable construction and acceptable performance for flexible connectors of other than all- metai construction for gas appliances. It is the result of years of experience in the utilization of gas, supplemented by extensive resear&

Nothing in this standard is to be considered in any way as indicating a measure of q d t y beyond compliance with the provisions it contains. It is designed to ailow compliance of flexible com&= of other than ail-metai 00- 'on iEor gas appliances, the construction and performance of which may exceed the various provisions specified herein. In its preparation, full recognition has been given to possibilities of improvement through ingenuity of design. As progress takes place, modifications may become necessary. When they are believed desirable, recommendations should be forwarded to the Chairman of Accredited Standards Commitbe 221,l East Pleasant Valley Road, Cleveland, Ohio 44131.

Safe and satisfactory operation of a flexible connectors of other than all- metal construction for gas appliances depends to a great extent upon its proper installation and it shouid be installed in accordance with the National Fuel Gas Code, ANSI 2223.1, manufacturers' installation instructions and local municipal building codea

Users of this American National Standard are advised that the devices, produ- activities within its scope may be subject to regulation at the Federal state or local level. Users are strongly urged to investigate this possibility through appropriate channels. In the event of a confiict with this standard, the Federal, state or local regulation should be followed.

CAUTION NOTICE. This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute, Inc., require that action be taken to reaffirm, revise or withdraw this standard no later than five (6) years from the date of approval. Purchasers of American National Standards may receive ament information on al standards by calling or writing the American National Standards Institute, Inc., 11 West 42nd Street, New York, N.X 1oou6, (212) 6429900.

EFFEcTlE DATE. An organization using this standard for product evaluation 88 a part of its certification program will normally establish the date by which all products certifed by that "on shoud comply with this standard. '

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HISTORY OF THE DEVELOPMENT OF STANDARD FOR FLEXIBLE CONNECTORS OF CY"ER THAN ALzrMETAL

C O N ~ U C I ' I O N FOR GAS APPLIANCES

(This History is infornmtive and is not part of the standard.)

At its June 1961 meeting, the Subcommittee on Listing Requirements for Connectors for Gas Appliances considered the need for a standard for gas appliance connectors of other than all-metal construction. The subcommittee requested the American Gas Association Laboratories conduct an investigation for the purpose of obtaining data from which a standard for such connectors could be developed.

The results of the investigation were reviewed by the subcommittee at its October 1962 meeting and a draft standard was adopted which was distributed for review and comment during March 1S3.

This draft standard was reconsidered by the subcommittee, in light of comments received, at its September 1963 meeting and subsequently adopted by the 221 Committee in March 1964. The first edition was approved as American Standard by the American Standards Association in September 1964.

On August 24,1966, the American Standards Association, Inc., was reconstituted as the United States of America Standards Institute. On October 6, 1969, the United States of America Standards Institute was renamed the American National Standards Institute, Inc. As a result, the second edition of the other than all-metal connector standard, which was retitled American National Standard for Flexible Connectors of Other Than All-Metal Construction for Gas Appliances, was

approved as American National Standard by the American National standards Institute, in 1971.

The third, fourth and fifth editions of the other than all-metal connector standard were approved as American National Standards by the American National Standards Institute in 1979,1985 and 1992.

Following the procedure outlined above, the 221 Committee adopted further revisions to this dandard in line with industry developments. This, the sixth edition of the other than all-metal connector standard, was approved as an American National Standard by the American National Standards Institute on March 10,1995.

Previous editions of the other than all-metal connedor standard and addenda thereto, approved by the American National Standards Institute, are as fonows:

221.45-1964 Z21.45a-1965 221A5b-1966 221.45-1971 Z21A5a-1973 Z21.45b-1976 221.45-1979 Z21A5a-1931 221A5b-19t33 221Ca5-1985 221.45a-1987 Z21A5b-1989 221.45-1992 Z21A5a-1993 221A5b-1993

NOTE: This 1995 edition of Z21.45 incorporates changes to the 1992 edition of 221.45 and addenda thereto. Changes, other than editorial, are denoted by a vertical line in the e.

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HOWARD L F'ORMAN, CY '

THEODORE c. LEMOFF, Vlce chairman tive SeJmehy mon-voting) ALLEN J. C A L L A " , Admuilstra . .

REPRESENTING AlR-C)NDI!I'IONING CONTRAmRS OF -CA aiaison Rep.)

James P. NomS

REPRESE"GAMER,ICANGASASSOCIATION

Charles D. Applquist Mi&aelE.Gripnn DanHansen John R Peak Jack D. Rea Billy R Ware

REPRESENTING AMERICAN HOME ECONOMICS ASHXIMION:

Robert S Cave

REPRESENTING ASSOCIATION OF HOME APPLWN~MANUFACTURERS

REPRESENTINGTHECANADIANGAS AssocLATION

James M. Jones

REPRESENTING CONSUMERS UNION

R E P R E B " G G A S A P I " C E MANUFAtXURERS W O N , INC.:

Daniel J. Canclini AlbertRchambei.Lain Wuliam E. Dalton Micael F. Grosso J. R Katchka James Mullen Ernestwenczl Daniel P. Werner

Bruce Geran Christopher Pollock (Alternate)

INDIVIDUALMEMBER&

Howard L Forman RMiChaelMaItin

REPRESE"G - O m ASSOCIA!I'ION OF PLUMBING AND MECHANICAL OFFICIALS

Jack Auen

REPRESE"INGMEC"IC~CONTRACT0Rs ASSOCIATION OF AMERICA, INC.:

Georgie Papritz w m c.Abeniathy

iii

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~ ~

I A S / A - G - A - Z2L-45 95 Ob86780 0038385 8 8 4 w

AccreiM standaras Committee 221 Membeishi 'P

REPRESE"GNATIONALASSOCIATI0N OF PLTJ'MFJING, " I N G , COOLING CONTRAmw

G. E. Wdert Alan R Andemon W-te) J. E. Martin Outeniate)

R,EPR,ESE"G NAVAL FACILITLES ENGI"G COMMAND, U S DEPARTMENT OF THE NAW:

REPRESE"G SO- BUILDING CODE CONGRESS:

Theodore c. Imoff REPRESE"G U.S. CONSUMER PRODUCT

SAFETY COMMISSION: (Liaison Rep.)

Donald W. switzer REP3SE"GNATIONAL INsTrruTE OF

SI'ANDARDS AND TECHNomx u s DEPARTIMENT OF COMMERCE: REPRESENTING U.S. D E E ! OF DEFENSE:

Waiter G. Gmgom Saunders

REPRESENTING "iONAL PRQPAW GAS A&wxwrroN:

R,EPRESE"G U.S. D E E " OF HOUSING ANDURBANDJWELOPMEWE (Liaison Rep)

Victor J. Ferrante Bm J. Swiecicki

iv

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John E. Bartholomew John E Grehoski DarylLHosler Mark N o h James ostsander EdReaney

James Brown Sam J. Foti

Auan J. Rooiitz Jerome J. Segai Brucezimmerman

Wayne Mad

V

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IAS/A-G.A. 221.45 95 Ob86780 0018187 657

CONTENTS

p* PARTI. C0"RUCi'iON

1.1 12 13 1.4 lb 1.6 1.7

13 ia

scope ............................................................... 1 wsamples ......................................................... 1 Matesials ............................................................ 1 Metallicnibing9tnicture ............................................... 2 connector Dimensions .................................................. 2 Fittings-DesignandDimension ......................................... 2 Genesal ............................................................. 2 Instructions .......................................................... 3 .............................................................. 4

P1 22 23 2A 25 2.6 2.7

2.9 Pl0

28

Genemi ............................................................. 6 strength ............................................................. 6 Eending ............................................................. 6 'Ibision .............................................................. 7 Durabiiityat High 'Ikmperatum ........................................... 8 Seasoncracking ...................................................... 9 ReconnecticnufFittjngs ................................................ 9 ShengthafFittings .................................................... 11 capacity ............................................................. 11 ResistancetoAmmoniaAtm~here ....................................... 13

EXHlBWA. LISIOFREFERIENCE SI'ANDARDS ................................... 14 PART III M A " G AND PRODUCIION TESIS ............................. 15 PARTIV . DEENTIONS ....................................................... 16 APPENDIX TABLE OF CONVERSION FACIORS .................................... 18

vi

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P r n I

C0"RUCI'iON

1.1 SCOPE

1.1.1 This standard applies to newly p r o d u d flexible connectors of other than all-metal construction for gas appliances, hereinafter referred to as COM&IS, constructed entjreiy of new, unused parts and materials, consisting of flexible tubing dependent on other than all-metal construction for gastightness, of lig, ' ig , ' i2 , ' I B , ' i4 , 1 and l'id inch nominal internal diameter, and having a fitting at each end provided with standard taper pipe threads for connection to a gas appliance and to house piping. Assembled connectors examined under this standard ahall nat exceed a nominai length of 6 feet (1.83 m).

For the purpose of this standard, an unused connector, including end fittings, is considered to be a connector which has not been installed.

1.12 C ~ ~ e c t o r s complying with this standard are considered suitable for use with natural, manufactwed, mixed and liquefied petroleum gases

1.13 Connedors complying with this Standard are for use on piping systems having fuel gas pressures not in excess of '/2 pound per square inch (35 kpa).

1.14 if a value for measurement as given in this standard is followed by an equivalent value in other units, the first stated value is to be regarded as the

1.1.5 All references to psi throughout this standard are to be considered gage pressure unless

1.1.6 Exhibit A contains a list of standards specidy referenced in this standard, and sources from which these reference standards may be Obtained.

andLpgasairm.ktm?s

S p E d d i O n .

o t b e r w i s e ~

1.2 TESTSAMPLES

1.2.1 Connectors submitted for examination under this standard shall be representative pro- duction sampk

1.2.2 The manufhcturer shall supply the number of samples of each nominal size, type and material specified by the testing agency. For test purpoaeg the testing agency may specify samples fabricated in lengths not to excee 6 feet (183 m).

1.3 M A T E x M s

1.3.1 Materials used in the construction of fittings for the connector shall meet the spedkations shown in 'Jhble I, within commercial tolerances, and satisfactory evidence of this fact shall be furnished to the testing agency.

TABLE I

Item - Brass machined fittings

Aluminum-alloy fittings

Cast iron fittings

Malleable iron

Stainless steel and all other materials

Specincation

w o Cu minimum 85% Cu maximum

86% Al minimum

Prohibited

Shall conform to the Standard Specification for C u p o l a Mal leable Im?q AmMAl97.

Shall be reasonably in accordance with the above and shall comply with the provisions of Part II of this standard.

13.2 Materials used in the exterior construction of the connector shall be resistant to deterioration from moisture, common household chemicals, and cooking oils or shall be provided with a coating suitable to prevent such deterioration.

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133 Materials used in the interior construction of the connector shall be residant to deterioration h m fuel gaa

1.4 MFI'ALLIC TUBING Sl'RUCIURE

Metailic tubing shall be constructed of metal of uniform thickness (commercial tolerances dowed), but no section of such tubing shall be less than 0.010 inch (0.264 mm) in cross-sectional thickness. Tubing shall be free from dents, flaws or other defects. Austenitic stainless steel with a minimum thickness of om inch (0.203 mm) is acceptable.

1.6 CON"ORDIMENSI0NS

1.6.1 The nominal length of a connector shall refer to the over-all length, including fittings. The actual length of any sample shail be within minus

inch (12.7 mm) to plus 2 inches (50.8 mm) of its nominallength.

1.5.2 Nominal connector size shall refer to the fnished internal diameter of the flexible tubing. The actual internal diameter of the tubing shall not be more than OB!% inch (0- mm) less than its nominai size, as determined by inserting a cylindrical rad of the proper diameter into the end of the tubing for linCh(2SAmm).

1.6 FTITJNGS - DESIGN AND DIMENSIONS 1.6.1 Fittings ahall be faced or otherwise finished

externally to provide an hexagonal or octagonal wrench grip. The dimensions across the ats and the length of the fiab for the type of & h g involved sha be not less than those specified in the SAE Hand- book, IWune2 Parts and Coinponentg Part 19.

1.6.2 Surfaces of fittings which normally may come in contact with the tubing shall have a smooth Gninh

1.6.3 Threads on pipe-end connections of fittings shall be taper pipe threads conforming to the Standard for Rpe Thma&, Geneml Purpose (Inch), ANS- BL2l.

The length to shoulder shall not be less than ShowninWleIL

1.6.4 Each end of the connector shall be equipped with a flare or other union fitting. A quick-

mmldeld a uni0nW.q. disarnnect device d l d bthe

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IAS/A.G-A. Z2L.45 95 0686780 OOL8L90 141

1.7.3 When a connector is provided with a protedive coating, the connedor shall comply with this standard without the coating, except those special provisions specified in 410.

1.74 A pmtective coating on a connector shall:

a Cover all portions of the connector which are capable of being bent or fleaed,

b. Adhere to or otherwise be tightly bonded to the surhce of the metal tubing,

c Not react with the metal of the tubing to the detriment of the tubing or the coating, and

d. Have no adverse effect upon the per- formance of the connector.

1.76 N o n m a c exterior parts or coatings shall not continue to burn after an ignition source has been removed.

Methd of 'lM

This test shall be conducted in a drafbfiw location.

One 2 foot (610 mm) connector shall be used for test purposes, and the connector shall not be exposed to a relative humidity greater than 70 percent during the %hour period prior to the test.

The connector under test shall be supported at one end and hung with its axis vertical.

A Bunsen burner having a nominal '//, inch.-diameter tube and with means for mtmhng the primary air and gas input shall be used as an ignition source. The gas at the burner shall be ignited and adjusted to produOe a fiame 2 to 3 inches (50.8 to 76.2 mm) in length.

The flame shall be applied to the nonmetallic exterior approximately 3 inches (76.2 mm) above the start of the exterior coating at the bottom end of the connector for 1 minute (by orienting the burner at an angle as needed to ignite the nonmetallic exterior or coating) and then withdrawn. If no burning, flaming or glowing combustion is observed, additional attempts to ignite the nonmetallic exterior covering of the connector shall be made with the flame varied from blue to yellow. If flaming or glowing combustion of the covering material on the connector is observed and ceases 60 seconds or less after removal of the ignition flame, the flame is to be reapplied at the same location for 1 minute immediately after the flaming o r glowing combustion stops. The ignition flame shall then be withdrawn and the duration of the flaming or glowing combustion noted.

The duration of flaming or glowing combustion aRer withdrawal of the ignition flame shall not exceed 60 seconds, nor shall any flame or glowing combustion travel to the end

of the connedor farthest from the point of application of the ignition ame.

1.7.6 Nonmetaiiic exterior parts or coatings shail

1.7.7 Special construction provisions applicable to protectively covered COM&I-S are specified in 1.73 thmugh 1.7.6.

not react with the metai of the cow^

1.8 INmumoNS

1.8.1 Instructions covering proper usage and installation shall be attached to each assembled connector.

The instructions shall include, as a minimum, statements to the effiect that:

a.

b.

c

d.

e.

f.

g-

h

i.

3

The gas outlet shail be in the same room as the appliance and the connector must not be concealed within or run through any wall, floor or padition.

The oonnector shall be of adequat~ length.

The final amembiy shall be tested for leaks CAUTION: Matches, candles, open fiame or other sources of ignition shall not be used for this purpose. Leak test solutions may c a ~ d o n - ~ ~ * ~

Contact with foreign objects or substances &ail be avoided.

The connector shali not be kinked, twisted or torqud

Connectors are not designed for movement after installation. Bending, flexing or vibration must be avoided. (Also see 1.82.) Normal operation of a clothes dryer, infrared tube heater or similar appliance does not constitute extreme vibration or movement

Connectors are for use only on piping systems having fuel gas pressures not in

This connectar complies with the standard for Flexbb Connectors of Other Than AU Metal Construction for Gas Appliances, ANSI 221.45 (unless this is shown as a markhq& 8ee IS*).

The connector and fiaings are designed for use only on the original installation and am not to be r e d for another appiiance or at another location.

- of'/. psi (3.6 kpa). (see 1.12) --`,``,,`,`,,`,`,`,``,,``,,``,``-`-`,,`,,`,`,,`---

Connectors shall also bear a cautionary statement totheeffectthat:

CAUTION CONNECTOR NUTS MUST NOT BE CONNECTED DIRECTLY TO PIPE THREADS. THIS CON- NECTOR MUST BE INSTALLED WlTH ADAPTERS PROVIDED.

Connectors for fiare type fittings shall also bear an iilushtion similar to the ibllowing

The instructions need not necessarily be permanent in natute, but shall be sufciently durable and attached in a manner that they may be expected to reach the person who wiil install the connector. A self-adhering label wrapped around the connector will be acceptable. The information on the label shall be printed on an area having a minimum dimension of2 by 4 inches (MIS by 102 mm).

These instructions shall be reviewed by the testing agency for accuracy and compatibility with the results of tests h m a technical standpoint, and with the National Fuel Gas code, ANSIBBi.

The connector shall bear the following wainllig in 10 point type provided on a Class IIIA marking material: rw) NOT REUSE.

1.8.2 Instructions for a connector which also complies with the Standard for Connectors for M d l e Gas Appliances, ANSI Z2L@, may substitute the instructions in a or b below for those spe4sed in 181-f:

a Flexing, excessive bending and vibration shouid be avoided.

For fixed appliance installation, connector movement after installation should be avoided.

b.

1.85

For movable appliance installation (e.g., those factory-equipped with casters), continuous movement should be avoided.

AVOID - FlexiIq&ex.sf3ivebendingandvibration.

Movement after installation on fixed appliances

Continuous movement on movable appliances (eg., those factoryequipped with casters).

If the manufacturers instructions include the capacity of the connector, the capacity shall be that shown in Table MI or, if the connector is of a length not covered by the table, shall be consistent with IBble VIIL

If the capacity is indicated, the instructions shal also include:

a

b.

c.

d

The nominai internai diameter (ID.) of the COMeCtO~

The pressure drop, heating value and specific gravity of the *a? gag

A statement t ha t the capacity was determined under test conditions specified inthisstandai.d;and

A statement that the capacity at 0.2 inch water column (60 Pa) pmmm drop can be determined by multiplying by 0.632

1.9 MARKING

1.9.1 Marking material shall be identified by class number and shall meet the following specifications. Ail metai marking materials shall be rustproof. All markings shall be suitable for application to the type of surface upon which applied. nie designation of any class of marking shail not preclude the use of marking of a lower number class

ClasSI. IntegralMarking

Marking that is embossed, cast, stamped or otherwise formed in the part. This includes markin@ baked into an enameled fsurhce

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ClassM3. Permanentplate

Shall be made of metal having a thickness less than 0.006 inch (0.16 mm). Such plates shall be attached by means of nonwatei.soluble adhesive.

ClassIIA-4. PermanentPlate

Shall be made of pressure-sensitive metal foil requuuig no solvent or ac-r. * .

ClasslIA-1. PermanentLabel

Sha be made of materiai not adversely appected by water, shall be attached by means of nonwatermluble adhesive.

ClasslIrA-2. PermanentLabel

ShaU be made of material not adversely affected by water, shall be attached by means of nonwatepsoluble adhesive. These materials shall not be located on surfaces having temperatures exceeding 175F (795C).

Class lI% Wakproof Marking

Shall be printed directly on the part with waterproof marking not adversely affected by a temperature of 175F (795C). This marking shall not be used on surfaces having temperatures exceeding 176F (795C).

ShaU be made of material which may be soluble in water, and may use watewmluble adhesive for attachment means

ClasSv. PrintedMarking

Marking shall be clear and prominent and may be applied directly by any printing means

ClasSn Attached7hgB

1.922 Assembled appliance connectors shall bear a Class I marking, on either a nonremovable ring or a portion of a nomemovable fitting not subject to tool usage, on which shall appear the f o l l m

a.

b.

c.

d.

e.

13.3

Symbol of the organization making the tests for compliance with this standard.

A number, not less than /32 inch (2.4 mm) in height, identical to the iast two numbers of the calendar year in which the connectom are. manufEaduiled to identi@ the y%WOflIl#Ul%lhtUW5

A letter(s), not less than inch (2.4 mm) in height, identiqing either the month or batch of manufacture. he batch size shall b e m edbythemauuhctuwr.

If the &andard d e r which certified is not identifed in the instxuctiow a marking to identify this standard as follows: ANSI z21.45. (see 181-h) Removable end fMngs, other than manual

valves or quick-disconnect devices or union end pieces, of assembled appliance connectors ahall bear a Class I marking showing t h e connec tor manufacturers recognizable trade-mark or symbol. Manual valves, quick-disconnect devices and three- part unions shall bear the marking of the valve, or device or union manu.hdwds).

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PART II

2.1 GENERAL column (20.3 kPa) air pressure, The air shall then be shut off, and there shall be no leakage as evidenced by the pressure gage for 1 minute t h e . 2.1.1 Connectors employing protective coatings

shall comply with the provisions of this standard without their protective coatings, except those special provisions specifed in 2.10.

2.1.2 During tests for compliance with this 2.3 BENDING

2.3.1 The connector shall withstand 70 bends standard, connctions shall b made using the maximum torque specified in Table VI, unless without l- or to the tubing or fietingg otherwisespecified Methodofw

One end of a 2 foot (610 mm) connector shall be A manual valve or quick-disconnect device

supplied as an end connection shall be removed and replaced with a plug prior to conduct of the following tests

2.2.1 The connector shall withstand, without bursting or leakage, a hydrostatic pressure of 260 pounds per square inch (1.7 m a ) .

securely attached to a fixed pipe to which an air supply system and manometer are conneded. The other end shall be closed gastight. %o mandrels of the size specified in Table III shall be placed, one at each side of the fixed end of the connector, in contact with the connedor fitting and with center lines opposite the tubing end of the nut. A spring scale shall be attached to the unattached end of the connhr.

Method of &st

MANDREL SIZE FOR BENDING TEST A 2-foot (610 mm) connector shall be assembled in a hydraulic pressure test system, including a pump, gage and heavy-duty pipe fittings, capable of sustaining the desired p m , cam being taken t o b all air h m the system. Nominal

The applied pressure shall be maintained for 1 minute. If no bursting or leakage occurs during this period, this p&on shall be deemed met. This test shall be applied to each nominal diameter, type and material of connector mibmitted.

2.2.2 The connector shall withstand, without leakage and without becoming detached, a steady lengthwise pull of 800 pounds per inch (140.1 Nhnm) of nominal inside diameter for 6 minutes

Method of W

One end of a 1-foot length (305 mm) length connector shall be securely attached to a fixed pipe to which an air supply system and pressure gage is connected. The other end shall be securely attached in a similar manner to a closed pipe connected to a mechanical means by which a constant pulling force of 800 pounds per inch (140.1 N h ) of nominal inside diameter can be appiid

The required tension shall be applied to the connector and maintained for the duration of the test. At the end of 5 minutes the a x m e shail be subjected to 6 inches mercury

Connedor MandrelDiameter, LD., Inch Inches (mm)

pull, Pounds 0

Air shall then be admitted to the connector until a pressure equivalent to 3 psi (20.7 kPa) is obtained. The I tubing shall be bent h m the starting position A along the path shown by the dashed circle in Figure 1 to the pition indicated by B. It shall then be bent back to the starting position and bent in the opposite direction to position C. Each time the conn&r is in position 3 and position Y, as shown in Figure 1, a pull equivalent to that shown in W l e III shall be exerted on the unattached end. Each 180 I degree (3.14 rad) bend and subsequent return to the starting position shall be counted as one cycle. This process shall be

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repeated until 70 cycles have been completed, the bending motion being applied uniformly at the rate of 5 cycles per minute.

Any leakage as determined by a sudden drop in pressure registered on the manometer, during the course of the bending operatian shall be considered as noncompliance.

Following completion of the 70 bends, the tubing and fittings, with pressure applied, shall be immersed in water to a depth of not more than 2 inches (50.8 mm). If no leakage occuis, this provision shall be deemed met. This test shall be applied to each nominal diameter, type and material of connector submitted.

A m

A - Position of free end at start of bending test.

B and C - Position of free end after bending aroundmandreL

D - Mandrel - *I4 inches (572 111111) diameter. E-FixedPipCA

Fgure 1. Illustration of Bending 'Ilest

2.3.2 The connector shall be bent 90 degrees (1.67 rad) around a mandrel of the size specified in

Ikible E without a percentage reduction in int~~rnal diameter in exoess ofthe values qcied in 'Ible IV.

M A X I M u 1 M - m REDUCIION IN CONNECroR l"W

DLAMETER CAUSED BY BENDING 90 DEGREES

Nominal Connector I.D.,

Inch

Maximum Permissible Reduction in Diameter,

Percent

12.5 16.0 17.5 20.0 22.6 27.5 32.6

A 2-foot (610 mm) connector shall be bent around a mandrel of the size specified in Table III so that it is in contact with the mandrel through 90 degrees (1.57 rad). With the connector held in the Wegree (1.57 rad) bend, it shall be determined that the percentage reduction in diameter is not in excess of the values specified in 'Iable W. [One means of making this determination is by passing a bail of suitable diameter through the connector while it is bemg held in the 90-d- (1.57 rad) bend.]

2.4 TORSION

ThecoIinectorshallwithstand, without or damage to the tubing or fittings, 15 applications of 9odegree (157 rad) twists in xlkmah directions.

One end of a 2-foot (610 mm) connector shall be securely attached to a rigid frame and loaded in tension as s p e d 4 in 'pable V:

An air pressure equivalent to 6-inches mercury column (20.3 Wa) shall be maintained in the system while the tubing is rotated 90 degrees (1.57 rad) at the unattached fitting, in a plane perpendicular to the axis of the tubing, and then returned to the original position and rotated 90 degrees (1.57 rad) in the opposite direction. Each 90-degree (1.57 rad) twist and subsequent return to the

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IAS/A.G.A. 223.45 95 0686780 OOLBL95 723

origuiai position shall be counted as 1 @e, and the twisting motion shall be applied uniformly at a rate of 5 cycles per minute. If the connector shows no indication of leakage when immeed in water to a depth of 2 inches (50.8 mm), this provision shall be deemed met. This test shall be applied to each nominal diameter, type and material of a m n b r submitted.

TABLE V

APPLED LOAD DURING TORSION !i"

Nominal Connector I.D.,

Inch

adjusted so that the temperature of the connector does not exceed 810F (432C) nor drop below 790F (421C) in the succeeding 15 minutes. At the end of this period, the connector shall be removed from the oven and cooled to m m temperature.

One end of the connector shall then be plugged or capped and the other end attached to a suitable pneumatic system capable of supplying clean air or nitrogen at pressures up to 14.0 inches water column (3.48 H a ) and inmrporating a flowmeter capable of indicating accurately a flow rate of 1.0 cubic foot per hour (7.86 cm3/s).

Any leakage noted shall not be in excess of 1.0 cubic Weight,

Pounds (kg) foot per hour (7.86 m3/s).

- Care shall be taken to maintain the connector in its

12.50 (5.7) 18.76 (8.6)

origmal clamped amfigwation h u g h o u t the test.

25.00 (11.3) 2.5.2 The connector shall withstand a temper- 31.25 (14.2) ature of 450F (232C) without leakage when 37.60 (17.0) subjeded to a test pressure equivalent to 6.0 inches

mercury column (20.3 kPa). Nonmetallic liner 50.00 (22.7) 62.50 (28.3) material shall not exhibit signs of deterioration. A

manuai valve which complies with the Standard for Manually Operated Gas Valves f o r Appliances,

!25 DURABlLlTYATHIGHTEMPERATURE

2.5.1 The connector shall withstand a temper- ature of 800F (426.5"C) without leakage in excess of 1.0 cubic foot per hour (7.86 cm%) at 14.0 inches water column (3.48 kPa) test pressure when clamped into a loop which has been formed by bending the connector around a mandrel of the diameter specified in 'Ible ID. A manual valve which complies with the Standard for Manually Operated Gas Valves for Appmces, AppuanCe Connector Valves, and Hose End Valves, 221.15 or a quick-disconnect device which complies with the Standard for Quick-Disconnect Devices for Use with Gas Fuel, ANSI 221.41, supplied as an end connection, shall be removed during this test and replaced with a suitable plug.

Method of W

Thermocouples shall be soldered, brazed or otherwise attached to the end fittings of a %foot (610 mm) connector. The connector shall be bent and formed around a mandrel of the diameter specified in Table III as shown in Figure 2. The loop shall be restrained in the resulting position by clamps as shown in Figure 3 (whether or not it has bent down to the mandrel diameter), and the mandrel shall be removed. The connector shall then be placed in a preheated oven. When the temperature of the connector end fittings reaches 790F (421"C), the oven temperature shall be

Appliance Connector Valves, and Hose End Valves, ANSI 221.15, or a quick-disconnect device which complies with the Standard for Quick-Disconnect Darices for Use with Gas Fuel, ANSI 221.41, supplied as an end connection, shall be removed during this test and repiaced with a suitable plug.

Method of W

Thermocouples shall be soldered, brazed or otherwise attached to the end fittings of a Cfoot (1.22 m) connector. The connector shall be coiled around a mandrel of a size specified in 'pable III and secured in position. This assembly shall then be placed in a preheated oven. When the connector has attained a t e m p - of 440F (226.5"C), the oven temperature shall be adjusted so the temperature of the connector is maintained at 450 * 10F (232 f 55C) for the succeeding 24 hours. At the end of this period the connector shall be removed from the oven and allowed to coal to room temmture.

The connector shall then be uncoiled and recoiled around the mandrel 25 times. Following completion of this operation the tubing and fittings, with a test pressure equivalent to 6 inches mercury column (20.3 kPa) being applied, shall be immersed in water to a depth of not more than 2 inches (50.8 mm). If leakage occurs, testing shall be discontinued. If no leakage occurs, the testing procedure specified in 2.2.2 shall be applied to the connector. If no leakage occur^, this provision shall be deemed met h m the

8

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I A S / A . G * A . Z2L.45 95 0 6 8 6 7 8 0 OOL8L96 6bT

standpoint of leakage. A connector having nonmetallic liner material shall then be cut open and the liner examined for cracks, breaks or other signs of detmioratian.

!2.6 SEASONCRACKING

Specimens of Copper and brass tubing and fittings shaii not show cracks or flaws under the following CollditiOIlS

Method of Test*

Any plating on the tubing and fittings shall be removed prior to this test. The specimen shall be degreased in a suitable alkaline degreasing solution or organic solvent. If necessary, the specimen shall be totally immersed in an aqueous solution of sulfuric acid (15 percent by volume) or nitric acid (40 percent by volume) until all oxides are completely removed from its surface, or shali be pickled in such solutions as may be prescribed in the specificatom for the material being tested. The specimen shall then be removed h m the pickling solution and washed immediately in running water. It shall then be drained until free of excess water and then totally immersed a t room temperature in an aqueous solution containing 10 grams of mercurous nitrate and 10 milliliters of mercurous nitrate solution shall be used per square inch (6.5 cm9 of exposed surface of the test specimen.

ARer 30 minutes the specimen shall be removed from the mercurous nitrate solution and washed in running water. Any excess mercury shall be wiped from the surface of the specimen which shall immediately be examined visually for cracks. In cases of doubt regarding the presence of cracks, the mercury on the surface of the specimen shall be volatilized by the application of heat on a hot plate or in an oven.** The specimen shall then be examined for cracks under suitable magniS.rng equipment at a magnification of 10 to 18 diametem.

Ehiden of c o d v e action of the test solution shall not be considered as noncompliance with #is provision.

2.7 REOONNECTON OF

The comedor shall not leak as a result of being mm~disconnectedandmnnectd.

This Method of- is takm bnn the standard Mhod ofMe3mmua Nitrnte !fsi for Copper and CbpprAl& ASlM B154

CAUTION - Mercury is a definite health hazard and, therefore, ~ d p m e u t forthe detedion and removal of menauyvapor produced III datiibm is rearnunended The use of rubber @ o w in testing isartvisabh.

Method of ' k t

Connectors employed for this test shall be new. Two samples of each nominal diameter, type and material shall be supplied for test.

The connector to be tested shall be connected to a leakpmfsystem in such a manner that the pipe thread end of the fitting is held rigid.

The union shall be tightened by the application of a torque not to exceed the minimum torque specified in lble VI. Air shall then be admitted to the system under a pressure equivalent to 6 inches mercury column (20.3 P a ) and leakage d3served by cmnpletely immersing the mnnected end in water. If leakage is observed, the torque shall be increased a d c i e n t amount to ovemme the leakage, but shall not be increased in excess of the maximum torque specified in Table VI. Evidence of leakage, following application of the maximum permissible torque, shall be considered as noncompliance with this provision.

APPLIED TORQUE DURING RECONNECTION OF F l " G TEST

Nominal lbrque, Inch-Pounds Wem) Connector ID., Inches Minimum MaMmum

li4 160 (16.96) 260 (2938) "8 200 t22.60) 390 (44.06)

"8 300 (33.90) 650 (73.44)

ill4 550 (62.14) 1300 (14688)

'12 250 (28%) 520 (68.76)

"4 400 (45.19) 780 (88.13) 1 450 (60.84) 1040 (117.50)

The assembly shall then be removed from the water and a section of rigid pipe, with edges rounded at the ends, shall be fitted over the tubing with its nearest edge a distance from the top of the fitting equal to the internal diameter of the tubing. This pipe shall be used as a handle to deflect the tubing at the fitting 60 degrees (1.05 rad) in one direction from the center line of the fitting. The tubing shall then be returned to its original position, deflected 60 degrees (1.05 rad) in the opposite direction, and again returned to its onginal @tion. The test fm leakage shall be applied as specied above. Evidence of leakage at this time or during any subsequent immersion test shall be considered as noncompliance with this provision.

9

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~

I A S / A - G - A - Z2L.45 9.5 Ob8b780 0018197 5Tb =

MANDREL RELIEVED APPROXIMATELY A S SHOWN TO ALLOW FOR CLAMPING. SEE FIGURE 3

Figure 2.

Application of Force During Conduct of 2.5.1

Figure 3.

Clamping of Connection During Conduct uf 2.5.1

10

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The union shaU then be disconnected, the tubing rotated 55 degrees (0.96 rad) in a clockwise direction, and the union again assembled to the fitting and tightened by the application of a torque not to exceed the torque determined t o be necessary t o overcome leakage in the previous connection. Leakage tests shaii again be applied as specified above. If no leakage occurs, or if leakage is observed and can be overcome by an increase in torque not to ex& the maximum torque specified in Table VI, the tubing shaii be deflected as described in the preceding paragraph after which leakage tests shall again be applied as specified h e .

The procedure specied in the rireceduig paragraph shai be performed a total of 8 times without evidence of leakage.

Nominal

LD., Inch

CoMedor

2.8 SI"G"HOFFlTI!iNGS

Straight Length Capacity-Btu Per Ir (W), 0.84 Sp Gr,

(U4 Pa) hersue Drop 2 Feet (0.81 m) I 4 Feat (1.22 m) I 6 Feat (1.89 m)

loo0 Btu Per CU Ft (37.2 wh') Ga8 at 0.6 Inch Water COlUmn

2.8.1 The connector shall not leak, break or be otherwise adversely affected by application of a tightening torque of 1,040 inch-pounds per inch (4. kN.m/m) of nominal tubing diametex.

Method of W

For this test one sample of each nominal diameter of assembled amnech shall be employed.

" h e pipe thread end of one end of the connector shall be rigidly comW to a leakproof system. The other end of the connector shall be sealed so that no leakage will occur at this point under an air pressure of 6 inches mercury column (20.3 kPa). The fitting assembly shall then be tightened by the application of a torque of 1,040 inch-pounds per inch (4.6 kN* m/m) of nominal tubing diameter. If no bnxikage occu~s, air ahall be admitted to the system undera pressure equivalent to that of a 6-inch mercury column (20.3 Wa), and with the fiting end completely Unmersed in water, no leakage shall be evident.

2.8.2 Fittings of tubing-type connectors shall withstand the impacts specied in able W without leakage, cracking or breakage. This test shall not be applied to manual valves which comply with the Standard for Manually Operated Gas Valves for Appliames, Appliance Cbruaechr V s and Hose End Valves, ANSI, 221.15, or quick-disconnect devices which comply with the standard for &uick-IXscomt Devices fir U . with Gus Fuel, ANSI 221.41, supplied asendftkhgsonconnectors

Method of 7kst

The fitting on one end of a connector shall be tightened to a torque of 1,040 inch-pounds (4.6 kNe d m ) of tubing diameter. It shall be secured to a pipe nipple or fitting

mounted on a rigid surface so that the free length of the supporting member is not greater than 2 inches (50.8 mm). It shall then be struck an impact at 90 degrees (1.57 rad) to the gasway The testing device shall be arranged so that the center line of contact between the striking weight and a wrench flat of the nut will be at the longitudinal center of the fiat.

After this impact, the fitting shall be checked for leakage under an air pressure equivalent to 6 inches mercury column (20.3 Wal and wmined visuaiiy for cracks or breaks.

TABLEW

IMPACT APPLTED DURING CONDUCI' OF 2.8.2

Nominal Connector I.D., impact,

Inch Foot-Pounds (Nem)

10 (13.66) and larger 16 (20.33) u p to

2.9.1 The capacity of a 2 foot (610 mm), 4 foot (1.22 m) or 6 foot (1.83 m) connector at a pressure drop of 0.6 inch water column (124 Pa) shall not be less than that specified in Table VIII. During the conduct of this test, end fittings, other than appliance COMeCtOI' VdV- or qUiCkdhCOM0Ct devices used 88 endfittinlffshallbeinplace.

Standard weight pipe of proper size, reamed to remove burrs caused by cutting, shall be fitted to the inlet and

11

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outlet connedions of the connedor. The straight run of pipe before and after the connector shall be a length not less than 10 pipe diameters (1.D.). Two short lengths of pipe or metal tubing shall be soldered to the pipe, one before the inlet and the other after the outlet connections. Pressure tappings shall be located five pipe diameters (1.D.) h m the inlet and outlet connections. A drill shall be inserted in the short length of pipe or metal tubing and a hole drilled through the wall of the large pipe, care being taken to remove any burrs caused thereby. The two pressure tappings shall be corn@ to a differential pressure gage which may be read directly to at least 0.01 inch water column (2 Pa).

Either gas or air may be used for the test. If gas is used, it shall be vented or burned as far away from the connector, test meter and other test instruments as will preclude the heating of such equipment. The flow rate shall be adjusted to give an indication on the gage approximately equal to the pressure drop specified above and the necessary observations made and recorded. Observations may also be made at a number of Werent pressure drops.

Capacity of the mm&r shall be resolved h m these data aamcimg to the following f m u k

or, sina?

then

sp gq = corrected or actual specific gravity of test gas (or air), as meted,

Pt = absolute pressure of test gas (or air) as metered, in. mercury column Wa),

sp gr2 = 0.62 =specific gravity of water vapor referred to dry air as 1.0,

pdt = observed pressure drop (correded for difFerena? in velocity head, if any, due to change of area at points tappings are taken), in. water column (pa), and

0t = temperature of test gas (or air), as metered, "F absolute (K>.

In the event the area at the inlet and outlet tappings are *mt:

where

The velocity head, in. water column (Pa), at the inlet tapping (hv,) or outlet tapping (hv,) is found by the following formula:

and

C = 1.0335 x lo6 for U.S. customary units (2.1923 x 10'~' for metric units),

PQ = pressure drop (may be negative) between inlet and outlet pressure tappings on manifold as observed, in. water column (kPa),

w h m D = inside diameter of pipe at inlet or outlet pressure

K = 3685 for U.S. customary units (244 O40 for metric tapping, in (m), and units),

P = absolute pressure of test gas (or air) at inlet or outlet pressure tappings, in. mercury column Wa).

9% = capacity with g a s of 1,000 Btu per CU f t (37.2 M J h 3 ) and 0.64 sp gr [saturated with water at 60F (15.5"C) and 30 in. mercury column (101.3 &)I, Btu per hr 0,

2.92 When a flexible comedor is supplied with a quick-disconnect device as one end fitting, the Q1 = quantity of test gas (or air) as metered, cu ft per

hr m3hr), capacitytest clesmbdin29.1 shall be conducted on

12

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the asgembled c o n n h ~ A 2 foot (610 mm) connector of each nominal size aha be testea

The capacity of the system referred to a 0.64 specific gravity, 1,ooO Btu per cubic foot (37.2 MJhn') gas at 0.5 inch water column (124 Pa) pressure drop, shall not be less than:

a 34, Btu per hour (9 964 W) for a '/4 inch connector.

b. 71,000 Btu per hour (20 &os W) for a connector.

inch

c 11!2, Btu per hour (32 824 w) for a 'I2 inch connector.

d. 114,000 Btu per hour (33 410 W) for a '/* inch amnector.

e. 178,M.W Btu per hour (62 167 W) for a 'I/, inch connector.

f. 288, Btu per hour (87 335 W) for a 1 inch connector.

Copper d o y connectors and fittings shall not develop faults which would result in gas leakage under the foliowing condition of test.

M e t h d of W

The test specified below shall be applied t o each naminal diameter, type and material of connector submiw.

A connector shall be bent around a mandrel of a size as specified in Table II to krm a "U" shape. The ends shall be secured with a nonmetallic matmial to hold the COMCY~X in this shape. One end of the connector shall be attached to an air supply system equipped with a manometer downstream h m a shutoff valve and the other end sealed gastight. Air shall then be admitted to the connector until a pressure equivalent to 6 inches mercury column (20.3 kPa) is obtained and the shutofFvalve d d .

The connector, from the back of one connector nut to the back of the opposite mm&r nut, shall be suspended in a sealed plastic container to which 500 milliliters of ammonia solution containing 250 mlilit~rs of full strength ammonia (28 percent) and 250 milliliters of water have been added. (More than one connector may be placed in the container at one time.)

Note: The conn&r(s) must not come in contact with the ammonia solution at any time. See F'igure 4.

If a sudden drop in pressure occurs, the test shall be discontinued. Otherwise, the connector shall be removed h m the container after 18 hours and examined for leakage under not more than a 2 inch (50.8 mm) depth of water with an internal air pressure of 6 inches mercury column (20.3 Wal.

B A. Mandrel Munater

(See Table III) B. Nonmetallic Retainer C. SeilcdEnd D. PrauureTap E. Pliatic Contalnar F. Ammonli Solution

Figure 4.

Illustration of Ammonia Vapor Corrosion Test

13

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EXHIBITA

LZSTOFREFERENCESI'ANDARDS

(sourCes for m f m standards given in this E3thibit are denoted by superscn'.pt numbers.)

ANSI 221.161ssZ, M a n d y opsated Gas Valves fir &plinmes, Apphme C o m r Valves, and Hose End W v e ~ ' ~ ~

ANSI Z21.41-1fHR3, and Addenda, Z21Ala-1990 and Z21Alb-1992, Q u i c k - h & Devices fir Use with Gas M'@'

ANSI Z21S1992, and Addenda, Z!lABa-lsSiS, C o m m fir Movable Gas Appliances1*'

ANSI ZZ23.l-lssZ, National Fuel Gas Code1"p6

ANSYAGME Bl.!ZO.1-1983 (Rl!W2), pipe M, Geneml Aupose (lmh)a34

ASlM AW7-92, S'n f ir Cupda Malleable Imn'

B16482, Methcd of M m m m N i list fir hpper and Copper Auoyss

SAE Handbook, W m 2, Parts and Components, Part 19, lhbing, Hose and Fzthqp, 1991 Editions

1.AmesicanGaSkssociati ' 'on, 1616 Wilson Boulevard, Arhgton, V;.gUiia moS.

2. American Nationai standards Institute, Inc, 11 West 4!hd Stmet, New York, New York 10036.

3. Am& Society for Tsking and Mateda4 1916 Race Street, Philadelphia, Pennsylvania 19103.

4 American Society of Mechanical Engineers, United Engineering Center, 346 East 47th Street, New York, New York 10017.

6. Society 0fAubmotive Engineers, 400 Commonwealth Mve, Warredale, Pennsylvania 1696-l.

14

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I A S / A - G - A * Z 2 3 - 4 5 95 D Ob86780 O038202 793 =

PART m MANUFAC3"G AND PRQDUCTiON "S

The manufacturer shall submit to the certifying a Bending- agency a plan which is mutually acceptable to the manufacturer and the certifying agency and which b. %miontesta; d d b e s the programs and test p d u r e s specified in 3.1,3.!2 and 3.3 and the records to be kept by the manllhtsmr. to ammonia atm0sphei.e test; CResLStance

3.1 The manufacturer shall use a program to d. Reconnectionoffietingstesls;and qualify raw materials, parts, assemblies and put.chased components. e. Impact tests on fittings provided with both

e 2 d e x d a n d h t e m a l ~ 3.2 The manufacturer shall test each tube for

3.4 The manufacturer's test method(s) shall be capable of relating back to the test(s) specifd in the etandai.d.

1-

includes a mutually acceptable echedule(s) to amdud: 3.3 The manufadurer shall use a program which

16

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~~ ~~

IAS/A=G*A- Z2L-45 95 m 0686780 0038203 62T m

ADAPTER. As used in this standard, a metal fitting designed to connect standard taper pipe thrieads to the connector nut.

CAPACm. As used in this standard, the amount of a specified gas that d flow through a connector at a specif8ed pxwsure dmp in a fixed perid of time

CONDUIT, GAS. The gas passageway of the connector.

CONNECTOR, GAS APPLIANCE. A factory- fabricated assembly of gas conduit and related fittings designed to convey gaseous fuel, and used for making connections between a gas supply piping outlet and the gas inlet to an appliance. It is equipped at each end for attachment to standard taper pipe thi.eads. A gas appliance connector is not for vibration isolation.

1.

2.

s

Connector for Movable Appliances. A connector for use with appliances whose normal use calls for movement on a regular basis. A connector of this type is for occasional but not continuous movement

Metal Connector. A connector with a gas conduit made entirely of metal. It is not designed for repeated movement after being connected nor for repeated dimwnnectingandm~.

a Corrugated Connector. A metal connector having the gas conduit fabricated of metal tubhg formed into helical or annuiar corrugations

b. Semi-Rigid Connector. A metal connector having the gas conduit fabricated of semi-rigid metai.

Other Than All-Metal Connector. A connector having metal fittings, but with the gas conduit being of a non-metallic materia. The gas conduit is protected by a metal sheath. I t is not designed for repeated movement after being connected nor for repeated disconnecting and r e w n n a .

CONNECTOR, GAS HOSE. A connedor designed for use only with portable gas-fii.ed equipment. The gas conduit depends for gas tightness on the wall structure of the hose material. The conduit may be

The design and application presuppose that the connector wii not be presmulzed ' whentheappiiance served by the connector is not in use. Gas hose connectom include

supported with intmna metal or other rehhmem ent.

1. Gas Hose Connector for Portable Indoor Gas-Fired Equipment. A gas hose connector for use only with laboratory, shop or ironing equipment used indoors that ioquii.eS mobility during operation.

2. Gas Hose Connector for Portable Outdoor Gas-Fired Appliance. A gas hose connector for use with portable gas-fired equipment used outdOoIY&

CONNECTOR NUT. A threaded nut permanently attached to a connector conduit which mates with an aapter or gas valve to form a union joint

LISTED. Equipment or materiah included in a list published by a nationally recognized testing laboratory, inspection agency, or other organization concerned with product evaluation that maintains periaic inspecon of pi.oduction of listed equipment or materials, and whose listing states either that the equipment or material meets nationally recognized standards or has been tested and found suitable for useinaspeci&dmanner.

NONDISPLACEABLE RUiOR MEMBER. A valve member which cannot be moved from its seat by a force applied to the valve handle, or force applied by a piane surface to any exterior portion ofthe valve

PROTECTIVE COATING. As used in this standard, materiai applied to the exterior d a c e of the connector to enhance resistance to corrosive materials

16

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IAS/A.G.A- Z 2 L - 4 5 95 O686780 0038204 5 6 6

QUICK-DISCONNECT DEVICE. A hand-operated device which provides a means for connecting and disconnecting an appliance or an appliance connector to a gas supply and which is equipped with an automatic means to shut off the gas supply when the deviceisdisconnected.

TUBING. As used in this standard, the material from which the gas conduit of a connector is fabricated

UNION. An assembly of parts to facilitate connection or disconnection between the connector and gas piping without rotation of the connector tubing;.

U", GROUND JOINT. A union Consisting of three parts (nut, swivei and end piece) concenMcaiiy machined to provide agnmemt

VALVE, APPLIANCE CONNECTOR A manually operated valve having a nondisplaceable rotor, a minimum specified capacity (code marked on the valve), a taper pipe thread inlet and an outlet for flared tubing or taper pipe thread connection. An appliance connector valve is intended to be used between the gas supply piping and the appliance connector attached to the appliance.

VALNE, GAS. A manually operated valve which permits control of the flow of gas at any rate from none to "full OIL"

17

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~ ~~

I A S / A * G = A - Z 2 3 . 4 5 95 W Ob86780 0038205 4 T 2

E t m E a wow Q U A " l Y OF HEKT

&?k2Y

HE4T CAPACWY SPECIFIC HE4T CAPACWY

LPLpENTHE4.l.

VOLUME AT m. comlTIoNss

"3 VALUE

APPENDIX TAB- OF CONVERSION FACTORS

pou&!- imh-

pounddsquare inch

imh water column

pn 2.768 x 10 3.613 x lo2 iwc inch water column 6895 x 10 1.450 x 101 mb millibar pn

iwc 2491 4.015 x 10' mb mbar Btu 1.055 x log 9.478 x lo' J jouie Btu 1.055 9.478 x 10' !d iiojouie

2685 x lo6 3.724 x 107 J jouie 3.724 x 101 MJ meg&uie

horsepower hour h p b 2685 3.6 x log 2777 io7 J j0.e

horsepower hour hphr kilowatt hour kwhr kilowatt hour kwhr 3.6 2.777 x 10' MJ m e g w d

BtWhi- 2.931 x 10' 3.412 W watt Bhylir 2.931 x lo-' 3.412 x 109 kW kiiowatt

7.457 x lol 1341 x lua W watt 7.457 x 10' 1.341 kW kiiowatt

ton refngemtion (l2,ooO Bhiihr) 3516 x lb 2844x lo-' W watt tan refigemtion (l2,ooO Bhylir) 3516 2.844 x 10' kW kilowatt

Btulhour BtWhi- 2.929 x lo-' 3.414 x l@ kW &watt Bluhour6oo~ B W 3.155 3.1695 x 10' Whl watthuete?

hp hp

BtVF 1 m x lo3 5% x lo-' J f C puWdegtw Celsius B m F E""""; BtwIWF 4.u7 x log 2.388 x 103 Jrsg"C joule/kgdegree Celsius

Btivlb.?? 4.187 2388 x 10s k&fC !dojxlla4gdegree Celsius joddk i iogmn

kilojoWogmn B a b 2326x lo3 4299 x lo-' Jlkg Btwib 2326 4299 x 10' kJk?

Btu/pound Btu/pound

R8 i,% 30 iyh" Hg, nt) .9826 1.0177 ff (60% 30 inches Hg, dry) .me4 35.92 ma (GoCC, 760 mm a, dry) ,02832 35.3 1 ms (WC, 760 mm Hg, sat) .oz63 3789 ma (o"C, 760 mm Hg, dry) .Q26!j5 37.66 m3 (WC, 760 mm Hg, sat)

Btdcubic foot B& 5.752 x 10' 2684 x 10 whla megajodehete?

PRESSURE

* SI Units (international System of Units) have been adopted by the International Gas Union for use within the gas indushy. Where the same quantities have teen defined by IS0 (International standardc -tion, t h y JE identical to the SI Units.

Standard cubic foot (SCF) p d @ 60F nnd 30 uiches %t.tinated W.S. Conditions) standard cubic meter N o d cubic meter ( m j f ; S m d @ O T and 760 mm Hg, dry.

) m& @ 15'C and 760 mmx, dry. (SI conditions) - us. unit to u.s mit. 18

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I A S / A . G . A . 223.45 95 m Obb78O 0038206 339 W

The unit of temperature in the Internationa System of Units (SI) is the kelvin O, but it is generally accepted practice to express tempmiwe differences in terms of degrees Celsius ("C) because the degree intervals are identical. The term %entigrade" was abandoned in 1948 by the General Conference on Weights and Meapures but in fact is se;U in common use. The accepted abbreviation for centigmde is also "C and for aU practical purposes the degree intervais of centigrade, Celsius and kehrin, a m identicaL

Many temperature measurements are sti made in terms of degi.ees Fahrenheit ("F). Although a foxmal dennition of the Fahrenheit scale does not exist, it is based On:

a. The freezing (ice) point of water = 32F

b. The boiling point of water under standard p- conditions = 212F

c. The formula for absolute temperam sis CF-32) = "C

d. The fomuia for "temperatwe riae," PF-32) = "C

"F 'C "F - - - "C "F "C - - -

-40 -40.0 25 77.0 70 isso -20 -4.0 30 8ao 80 176.0

O 32.0 35 96.0 90 1940 10 50.0 40 1 W O 100 2l2.0 15 59.0 60 110 230.0 20 a 0 60 140.0 1#) 2980

Factor by which the unit is multiplied

1o0OoO0o0Oo0O =

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I A S / A * G * A . 221.45 75 W 0686780 OOL8207 275

LIST OF 221 SERIES OF AMERICAN "IONAL S"DARDS FORGASAPPLLANCESANDGASAPPLTANCXACCESSORIES

APPLTANCES

Household Cooking Gss Appliances, 22l.l

Gas Clothes DryeIq 2215 Volume I Ci21.6.1) Qpe 1 Clothes Dryers Volume II Ci21.6.2) Qpe 2 Clothes hyers

Volume I E21.10.1) Storage Water Heatms With input

Volume J (221.10.3) Simage, With input Ratings Above 74,000

Gas Water Heatem, 221.10

Ratings Of74m Btu Per Hour or ISs

Btu Pes How, CinxdAhg and Instantaneous Water Heatem Gas-Fre Room Heateq 221.11

Volume I E2l.ll.l) VenW Room Heaters Volume II (Z21.1124 Unventai Room Heaters

GasFrd Low-- Steam .d Hot Water R o h 221.13

lwigatom using Gas Fu4 221.19

GaoFii.ed Absorption summes Air conditionllig Appliances, 221.40.1

Gas-FrdIlluminatingAppliances,z21A2

GaeFired Gravi@ and Fan l&pe Direct Vent Wall GasFin?d centml Fumaces (Except Dim& Vent central

221.44

Fumaces), 221.47

GasF'ired Grav&and Fan Qpe Fioor Fhmmes, 221.48

Ga4Fired Gravity and Fan "&pe Vnted Wall Furnaoes, 221.48

Vented Decorative Gas Appliances, 22150

Ge4Fin?d Pool Heaterg 221.M

Reci.eational Vehice Cooking Gas Appliances, 221.67

outdoor cooking Gas Appiama, 221.58

Decorative Gas Appliances for kistallatio *nmSolid-Fuei

GaeFlred 'Ibilets, 22161

Portable Catalytic Camp Heaters for Use With Propane Gas, 221.62

P o d l e Camp Heaters of other Than the Catalytic

Burning F'implas, 221.W

for Use with Liquefa Petroleum Gaseq 22163

Direct vent central Funiaoeg 22164

20

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Portable Camp Cook stoves for Use With Propane Gas, 221.72 Portable Camp Lanterns for Use W& Propane Gas, 221.73 Portable R&igemh rs for Use With "5 Propane Gas, 221.74 Ga&red Unvente Catab.t;c Room Heaters for Use With Uquied

Petroleum W) Gases, Z21.76

ACCESSORIES

Gas Hose COM&^ for Portable indoor Gadred Equipment, 2212 Draff Hoods, 221.12

Manually perated Gas V k for Appiiancw, A p p b connector

Domestic Gas ~nversion Jhrnem, Z21.17 Gas Appliance Presswe Regulators, 221.18 Automatic Gas Ignition systems and Components, 221m

Automatic vahres for Gas Appliances, 22121

Valves and Hoee End Valves, 221.16

Relief Valves and Automatic Gas Shutoff Devices for Hot Water supply * 22122

Gas Appliance mf?mloe&&+ 221s Metal Connectors for Gas Appiiances, 221s Pilot Gas Filters, 22155 Qui&-Dkonnect Devices for Use With Gas Fu4 rn1.41

Flexible connedols of other Than Ail-Mel constnidion for

Gas Hoee Connectors for Portable Outdoor GasFii.ed Appiianw 221.64 Automatic Vent Damper Devices br Use With GasFired

Connectors for Movable Gas Appliance, 221.69

Earthquake Actuated Automatic Gas Shutoff Systenq Z21.70 Automatic Intermittent Pilot Ignition Systems for

Field kistallatton, ' 221.71 Manualiy-Operakl PiezeEiectric Spark Gas ignition systems

Combination Gas h t d s for Gas Appliancesi Z21.78

Gas Appliance sedunent 'Ii.aps, 221.79

Gas Appliances, 2214

Appliances, 22166

and Components, m1.n

Domestic Gas Convdon Burnem, 221.8

21

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