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TECHNICAL DATA

February 4, 2014 Foam 191a

FoAm CHAmbErsmoDEL FC

The Viking Corporation, 210 N Industrial Park Drive, Hastings mI 49058Telephone: 269-945-9501 Technical services: 877-384-5464 Fax: 269-818-1680 Email: [email protected]

1. DEsCrIPTIoNThe Chemguard Model FC 2.5, 3.0, 4.0 & 6.0 Foam Chambers consist of a foam expansion chamber and an integral foam maker. The foam chamber is installed on a flammable liquid storage tank just below the roof joint. The foam solution is piped to the chamber from outside the hazard area. Upon entering the chamber, the foam solution is expanded and then discharged against a deflector inside the storage tank. The deflector directs the foam against the inside wall of the storage tank. This reduces the submergence of the foam and agitation of the fuel surface. (NFPA Type II Application)Features

(4) models available to cover all flow requirementsTop of chamber has handle, which simplifies inspection access to the vapor sealFrangible glass vapor seal is provided. The glass is scored on one side and designed to break at a minimum 10 psi but not greater than 20 psi.Chamber manufactured in ASTM A36 carbon steel with a 304 stainless steel screen covering the foam maker air inletsAll foam chamber inlets and outlets are flat faced and drilled to ANSI 150 lb. standard. Flange gaskets are provided.Choice of two styles of deflector is available (split or solid)Finished with durable red epoxy paintA stainless steel inlet orifice is supplied. Chemguard sizes the orifice based on the foam solution flow requirements and the foam solution inlet pressure available at the base of the foam chamber.

2. LIsTINGs AND APProVALsUL Listed

3. TECHNICAL DATAspecifications:See Table 1material standards:Chamber - ASTM A36 Carbon SteelScreen - 304 stainless steel304 stainless steelInlet Orifice - Stainless SteelStainless Steelordering Information::

4. INsTALLATIoNFoam chambers are compatible with all types of foam concentrate; protein, fluoroprotein, AFFF, and AR-AFFF. They are generally installed on the side wall of vertical storage tanks above the maximum product level. Piping coupled to the unit can be linked to a fixed foam proportioning system, or terminated a safe distance from the tank, where foam solution can be delivered via mobile fire apparatus or portable foam proportioning equipment.Determining orifice sizeAfter determining the required foam flow rate and available pressure, the orifice must be sized using the following formula:

•••

•••••

Form No. F_012201

Viking Technical Data may be found on The Viking Corporation’s Web site at

http://www.vikinggroupinc.com.The Web site may include a more recent

edition of this Technical Data Page.

Where: d = orifice Ø (in.)Q = Solution Flow Rate (GPM)P = Pressure at orifice inlet (PSI)k = Orifice Coefficient = 0.61

d=( Q )1/2

29.836 k Pk P1/2

Table 1: Foam Chamber specifications

When placing a Foam Chamber Order, you must provide the Starting Pressure and desired Flow Rate.A properly sized orifice will be made to order and installed in the Foam Chamber.

size Flow: Part No. Weight

2-1/2” 26-187 GPM F15065 60 lbs.

3” 82-309 GPM F15070 100 lbs.

4” 130-737 GPM F15075 145 lbs.

6” 329-1120 GPM F15080 270 lbs.

Revised page replaces page 191a-d dated October 21, 2013.(Revised Table 2 Flow Ranges)

TECHNICAL DATA

February 4, 2014Foam 191b



5. oPErATIoNThe Model FC Foam Chambers produce foam by introducing air into the foam solution stream. Foam solution can be delivered to the foam chamber in a variety of ways as previously noted. Air is drawn into the foam maker through a series of annular holes located around the integral foam maker. To prevent obstruction, the air inlet holes are protected by a stainless steel screen selected with a perforation size designed to exclude most known nesting birds and insects. The open area of the screen is designed to be not less than the total area of the foam maker air inlet holes.

6. INsPECTIoNs, TEsTs AND mAINTENANCENoTICE: The owner is responsible for maintaining the fire protection system and devices in proper operating condition. For minimum maintenance and inspection requirements, refer to recognized standards such as those produced by NFPA, LPC, and VdS which describe care and maintenance of sprinkler systems. In addition, the “Authority Having Jurisdiction” may have additional maintenance, testing and inspection requirements which must be followed.WArNING: Any system maintenance or testing which involves placing a control valve or detection system out of service may elimi-nate the Fire Protection of that system. Prior to proceeding, notify all Authorities Having Jurisdiction. Consideration should be given to employment of a Fire Patrol in the affected area.

7. AVAILAbILITyViking Foam Products are available through a network of domestic and international distributors. See the Viking web site for closest distributor or contact The Viking Corporation.

8. GuArANTEEFor details of warranty, refer to Viking’s current list price schedule or contact Viking directly.

Table 2: Accessoriessize Flow: Part No. Description Weight

2-1/2” 26-187 GPM

F15066 Solid Deflector 5 lbs.F15067 Split Deflector 5 lbs.F15068 Mounting Pad 15 lbs.F15069 Spare Vapor Seal Assembly 1 lbs.

3” 82-309 GPM


4” 130-737 GPM


6” 329-1120 GPM


TECHNICAL DATA

February 4, 2014 Foam 191c



B

A

C

D

E

F

GH

I

SIDE VIEW

P Q

TOP VIEW

INLET FLANGE (E DETAIL)

ØK

ØL

ØJ

FC2.5, 3

OUTLET FLANGE (I DETAIL)

ØP

ØO

ØN

FC2.5, 3, 4

FC4, 6

ØL

ØK

ØJ

ØN

FC6

ØP

ØO

ØM

ØM

ØQ

ØQ

Figure 1 - Dimensions

FC2.5 FC 3 FC 4 FC 6A 26-13/16 32-1/16 35-13/16 42-7/8

b 15-1/4 19-9/16 20-13/16 25-7/16

C 15-5/8 12-3/4 14-3/4 18

D 7 9 10 12

E 2-1/2 3 4 6

F 3-1/4 4-1/4 5-3/8 6-3/8

G 6-1/2 8-1/2 10-1/2 12-1/2

H 8 9-1/2 11 12

I 4 6 8 10

J 1 2 2-1/2 3-1/2

K 5-1/2 6" 7-1/2 9-1/2

L 7 7-1/2 9 11

m 3/4 3/4 7/8 7/8

N 4-9/16 6-3/4 8-3/4 10-7/8

o 7-1/2 9-1/2 11-3/4 14-1/4

P 9 11 13-1/2 16

Q 3/4 7/8 7/8 1

r 8 12 16 20s 12 18 24 30

TECHNICAL DATA

February 4, 2014Foam 191d



50 60 70 80 90 100

110

120

130

140

150

160

170

40

50

60

70

80

90

100PSI

(2.76)

(3.45)

(4.14)

(4.83)

(5.52)

(6.21)

(6.89)(BAR)

GPM

(189

.3)

(227

.1)

(265

.0)

(302

.8)

(340

.7)

(378

.5)

(416

.4)

(454

.2)

(492

.1)

(530

.0)

(567

.8)

(605

.7)

(643

.5)

(LPM

)

FLOW @ 30 PSI (2.1 BAR) = 26-83 GPM (98-314 LPM)FLOW @ 100 PSI (6.9 BAR) = 49-187 GPM (185-708 LPM)

FC2.50 FOAM CHAMBER

30 50 70 90 110

130

150

170

190

210

230

250

270

40

50

60

70

80

90

100PSI

(2.76)

(3.45)

(4.14)

(4.83)

(5.52)

(6.21)

(6.89)(BAR)

GPM

(113

.6)

(189

.3)

(265

.0)

(340

.7)

(378

.5)

(492

.1)

(567

.8)

(643

.5)

(719

.2)

(794

.9)

(870

.6)

(946

.3)

(102

2.1)

(LPM

)


FC3.00 FOAM CHAMBER

160

200

240

280

320

360

400

440

480

520

560

600

640

40

50

60

70

80

90

100PSI

(2.76)

(3.45)

(4.14)

(4.83)

(5.52)

(6.21)

(6.89)(BAR)

GPM

(605

.7)

(757

.1)

(908

.5)

(105

9.9)

(121

1.3)

(136

2.7)

(151

4.1)

(166

5.6)

(181

7.0)

(196

8.4)

(211

9.8)

(227

1.2)

(242

2.7)

(LPM

)


FC4.00 FOAM CHAMBER

280

340

400

460

520

580

640

700

760

820

880

40

50

60

70

80

90

100PSI

(2.76)

(3.45)

(4.14)

(4.83)

(5.52)

(6.21)

(6.89)(BAR)

GPM

(105

9.9)

(128

7.0)

(151

4.2)

(174

1.3)

(196

8.4)

(219

5.5)

(242

2.7)

(264

9.8)

(287

6.9)

(310

4.0)

(333

1.2)

(LPM

)


FC6.00 FOAM CHAMBER

FLOW RANGE CHARTS FOR CHEMGUARD FOAM CHAMBERS

NOTE:1. Solution flow can be specified for any flow/pressure combination within the shaded area.2. Flows noted at 30 and 100 psi (2.1 & 6.9 bar) are flow achieved through the smallest & largest orifice available for each device.

40

50

60

70

80

90

100PSI

(2.76)

(3.45)

(4.14)

(4.83)

(5.52)

(6.21)

(6.89)(BAR)

30 40 50 60 70 80FEET9.1 12.2 15.2 18.3 21.3 24.4METERS

ONE CHAMBER

80 90 100 110 12024.4 27.4 30.5 33.5 36.6

TWO CHAMBERS

120 130 14036.6 39.6 42.7

CHAMBERSTHREE

140 150 16042.7 45.7 48.8

CHAMBERSFOUR

160 170 18048.8 51.8 54.9

CHAMBERSFIVE

180 190 20054.9 57.9 61.0

CHAMBERSSIX

NOTE:Selection of foam chamber is based upon foam solution pressure at inlet to foam chamber. If this pressure is marginal, always use thenext largest foam chamber size.

FOA

M C

HA

MB

ER O

PER

ATI

NG

PR

ESSU

RE

TANK DIAMETER

FC2.5

FC3.0

FC4.0

FC6.0

FC3.0

FC4.0

FC6.0

FC4.0

FC6.0

FC4.0

FC6.0

FC4.0

FC6.0

FC4.0

FC6.0

180

(681

.4)

680

(257

4.1)

30 40

(113

.6)

(151

.4)

30(2.1)

290

310

330

350

(109

7.8)

(117

3.5)

(124

9.2)

(132

4.9)

30(2.1)

120

(454

.2)

720

(272

5.5)

760

(287

6.9)

30(2.1) 30(2.1)

940

1000

1060

1120

1180

1240

(355

8.3)

(378

5.4)

(401

2.5)

(423

9.7)

(446

6.8)

(469

3.9)

30(2.1)

Figure 2 - Flow range ChartsForm No. F_012201 Revised page replaces page 191a-d dated October 21, 2013.

(Revised Table 2 Flow Ranges)

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