Download - Double-flanged, triple eccentric, resilient seated valve ...

Features• Triple eccentric design:

- 1st offset: center line of the resilient disc seal is offset from the center line ofthe shafts.

- 2nd offset: the center line of the shaft isoffset from the valve body.

- 3rd offset: the Keystone Dubex – RMIbody seat landing surface has the shape of an oblique cone with theground surface perpendicular to oneside of the cone.

• Triple eccentric design, along with aresilient disc seal, ensures bi-directionaldrop-tight shutoff per the AWWA C504specifications.

• In-line replaceable resilient disc seal.

• Fully rated dead end service.

• Standard body seating surface is ductileiron with Epoxy lining (Epasfill).Alternative seating surfaces such asstainless steel are available on request.

• Dry shaft option available.

• Axial bottom shaft bearing carrying thedisc weight when installed with shaft invertical position and ensuring accuratecentering of the disc assembly.

• Reversed V-shaped packing for vacuumapplications.

• Open brackets for packing access andadjustments are available on request.

• Self-lubricating bearings are PTFE lined.Alternative bushing materials areavailable on request.

• Horizontal or vertical shaft mounting.

• Low head loss, suitable for throttlingservices.

• Face-to-face:

- According AWWA C504-06 short.

- Above 72": manufacturer standard.

- Alternative face-to-face dimensions onrequest.

• AWWA POD (Proof Of Design)certificates for valves and gear unitsavailable.

• Clockwise closing, optional counterclockwise closing.

• Suitable for manual gear, electric,hydraulic and pneumatic actuation.

• Self-adjusting V-shaped shaft packingavailable.

• Performance testing in compliance withAWWA C504 requirements.

• Valves are cycle tested as per AWWAC504 requirements.

Applications• Drinking water pump station and

transportation/distribution.

• Waste water effluent and treatmentplants.

• Reservoirs, circulating water systems.

• Desalination plants.

• Cooling water systems (power plants,general industry).

CertificationAWWA, NSF/ANSI Standard 61 on appliedmaterials WRC/NSF

Technical DataPressure: 6" to 48" – 350 psi

up to 86" – 250 psiup to 120" – 150 psiabove 120" – contact sales

Temperature: 0 to 220°F

Flange as per AWWA C504accommodation: flat face (raised face

optional)

Drilling: 6" to 72" – ASME B16.1above 72" – AWWA C207, Class DOther drillings on request

Keystone Dubex – RMI AWWA Butterfly Valves6" to 160"

Copyright © 2009 Tyco Flow Control. All rights reserved. RMISB-0018-US-1006

Keystone is either a trademark or registered trademark of Tyco International Services AG or its affiliates in theUnited States and/or other countries. All other brand names, product names, or trademarks belong to theirrespective holders.

Flow Control

Double-flanged, triple eccentric, resilient seated valvedesigned for services in the water industry.

120" valve shown

Notes:• Coating: Dry layer thickness of 6 Mill,

NSF/ANSI Standard 61 approved• Rubber lining: Natural rubber (Ebonite), with

standard thickness of 1/8", and a Shore Dhardness of 75. Other linings available onrequest

• Other configurations available on request.


Copyright © 2009 Tyco Flow Control. All rights reserved. RMISB-00182

72" valve shown with epoxy resininternal lining (Epasfill)

No rubbing between disc sealand body seat

DiscSeal

3rd eccentricity

1st eccentricity2nd eccentricity

point of rotation

Clearancebetweendisc sealand bodyseat

Specific advantages of the triple eccentric design

• Torque seated: greater torque results in improved tightness.

• Closing torque is in direct relation with the shutoff pressure, which results in smaller actuator selections at lower pressures.

• Virtually no rubbing from the resilient seal on the seating surface. This enhances the life and performance of the elastomer disc seal.

• Large diameter valves are normally in open position. Sediments can settle on the bodyseating surface. Due to the specific geometry these, sediments are wiped off duringclosing, improving sealing performance.

• The resilient disc seal is replaceable in-line.

Retaining seal

Body

Body seat ring

Disc seal

Disc

Basic configuration, stainless steel seatBody external surface: two part epoxy

coating

Body internal surface: two part epoxycoating

Body seat ring: stainless steel

Disc seal retaining ring: stainless steel

Disc: ductile iron, two part epoxy coating

Lined configuration, stainless steel retaining ringBody external surface: two part epoxy coating

Body internal surface: rubber lined

Body seat: ductile iron, rubber lined

Disc seal retaining ring: stainless steel

Disc: ductile iron, rubber lined

Full lined configurationBody external surface: two part epoxy coating

Body internal surface: rubber lined

Body seat: ductile iron, rubber lined

Disc seal retaining ring: ductile iron, rubber lined

Disc: ductile iron, rubber lined

Standard configurationBody external surface: two part epoxy coating

Body internal surface: two part epoxy coating

Body seat: ductile iron, epoxy resin lined

Disc seat retaining ring: ductile iron, two part epoxy coating

Disc: ductile iron, two part epoxy coating



Optional: adjustable stuffing boxStandard shaft seal

Valve DimensionsValve Laying length D Weight ØA C H H1inch inch lbs inch inch inch inch

Laying length AWWA C504 short

6 5 110 6 6 11 3/4 4 3/88 6 155 7 7/8 8 14 1/2 4 3/8

10 8 199 9 7/8 9 17 4 3/812 8 243 11 4/5 10 20 4 3/814 8 375 13 3/4 12 22 3/4 4 3/816 8 419 15 3/4 13 24 7/8 4 3/818 8 530 17 3/4 14 27 1/4 4 3/820 8 629 19 5/8 15 29 7/8 4 3/824 8 993 23 5/8 18 35 3/8 4 3/830 12 1589 29 1/2 23 44 1/2 4 3/836 12 2318 35 2/5 27 49 7/8 4 3/842 12 3344 41 3/8 29 57 7 7/848 15 4040 47 1/4 35 67 8 7/854 15 5525 53 1/8 37 72 1/4 8 7/860 15 8113 59 43 85 1/5 8 7/866 18 10070 65 44 88 7/8 8 7/8

72 18 11589 70 7/8 51 100 1/2 8 7/8

Laying length manufacturer standard

80 37 3/8 13786 78 3/4 57 113 1/8 9 3/888 32 3/4 17561 86 5/8 61 121 3/8 11 3/496 35 3/4 21987 94 1/2 65 129 1/4 11 3/4

104 39 29360 102 3/8 69 137 11 3/4108 40 5/8 32450 106 1/4 71 141 11 3/4112 30 1/4 34658 110 1/4 73 145 11 3/4

120 35 3/8 39956 118 1/8 77 153 3/8 11 3/4

Lens shape up to 86"

Flow through shape disc from 88"



Notes:1. Listed data are valid for 150 psi rated

valve only.2. Rated Cv = volume of water in USG/min at

60°F that will pass through valve at a givenvalve opening at a pressure drop of 1 psi.

3. Values may change without notice.

4. Cv values are based on best data available;however, no responsibility is assumed forinaccuracies.

5. Allowable flow velocity: 72' - 10 Ft/s; ≥ 80" - 8 Ft/s. For higher velocity, please contact your salesrepresentative.

In our R&D facilities, all our large diameterKeystone Dubex – RMI valves are modeled andoptimized for specific flow conditions with infiniteFEM (Finite Element Methods) technologies.

Simulation of disc deflection under pressure Example of casting weight calculation

Cv Values

Disc Sizeopening inches 6 8 10 12 14 16 18 20 24 28 30 32 36 40 44

10 44 76 120 173 235 307 389 480 692 941 1080 1229 1555 1920 2324

20 86 154 240 346 471 614 778 960 1382 1882 2160 2459 3112 3841 4647

30 161 287 448 646 879 1148 1453 1793 2582 3515 4035 4592 5811 7174 8680

40 256 456 713 1027 1398 1826 2311 2853 4107 5591 6418 7302 9241 11409 13806

50 400 712 1112 1600 2178 2845 3600 4445 6401 8713 10001 11380 14402 17780 21514

60 621 1105 1727 2486 3384 4420 5594 6906 9945 13536 15539 17680 22375 27625 33426

70 1009 1794 2804 4036 5494 7176 9082 11231 6147 21978 25231 28706 36332 44853 54273

80 1313 2334 3795 5466 7440 9718 12298 15184 22835 31082 35681 40596 51380 63432 76753

90 1496 2661 4648 6694 9112 11901 15062 18595 29938 40748 46778 53222 67360 83160 100625

Disc Sizeopening inches 48 52 56 60 64 72 80 84 88 96 100 104 108 112 120

10 2766 3246 3765 4321 4916 6222 7682 8469 9295 11062 12004 12982 14000 15056 17285

20 5531 6492 7528 8642 9833 12445 15364 16939 18591 22125 24006 25965 28001 30114 34569

30 10331 12124 14061 16141 18365 23244 28695 31636 34722 41322 44838 48495 52298 56244 64566

40 16429 19282 22362 25672 29208 36967 45638 50316 55222 65719 71309 77128 83175 89451 102686

50 25604 30049 34849 40006 45518 57608 71122 78412 86058 102415 111128 120195 129620 139399 160024

60 39779 46685 54144 62155 70719 89504 110498 121824 133702 159116 172653 186741 201382 216575 248620

70 64589 75802 87913 100920 114825 145325 179414 197804 217091 258355 280334 303209 326981 351651 403681

80 91342 107200 124327 142722 162387 205521 266113 293391 321998 383204 415802 449732 484992 521582 598755

90 128019 150245 174248 200031 227589 288044 401181 442302 485429 577701 626846 677996 731153 786315 1058460



Material SpecificationPart name Material Material number Remark

Body Ductile Iron A 536 Gr. 65-45-12Disc Ductile Iron A 536 Gr. 65-45-12Retaining ring Stainless Steel Grade 316

Ductile Iron A 536 Gr. 65-45-12 Other available materials for body, disc and retaining ring likeA 395 Gr. 60-40-18, ASTM A 216 WCB, ASTM A 352 LCB, BS 2789 gr.420-12, ASTM A 352 LCB, ASTM A 351-CF8M etc.

Seal EPDM Temperature range 0°F to +220°F [-18°C to + 104°C]NBR Temperature range 15°F to +180°F [-10°C to + 80°C]

Shaft Stainless Steel ASTM A 276-431 Alternatives: Grade 316 and DuplexBearings Self lubricating PTFE-lined Bronze bearings alternativelyBody-seat Stainless Steel Grade 316 Alternative: Epasfill lined ductile iron, rubber linedDisc pin Stainless Steel ASTM A 582-430F Alternative: DuplexSeal cover Stainless Steel Grade 316Bottom cover Ductile Iron A 536 Gr. 65-45-12Axial positioning ring Stainless Steel Grade 316O-rings and seal NBR-rubberInternal screws Stainless Steel Grade 316Axial bearings Glass cloth reinforced PTFE

Adjustable stuffing box

Bracket Ductile Iron A 536 Gr. 64-45-12Gland Ductile Iron A 536 Gr. 64-45-12

Packing Braided TFE Hamar TP

Material SelectionBody Disc Shaft Disc seal Body seat Retaining ring Trim no.

Ductile Iron Ductile Iron Stainless Steel EPDM Stainless Steel Stainless Steel 450Ductile Iron Ductile Iron Stainless Steel EPDM Ductile Iron (Epasfill) Stainless Steel 451Ductile Iron Ductile Iron Stainless Steel EPDM Stainless Steel Ductile Iron 452Ductile Iron Ductile Iron Stainless Steel EPDM Ductile Iron (Epasfill) Ductile Iron 453

Body Disc Shaft Disc seal Body seat Retaining ring Trim no.

Ductile Iron RL Ductile Iron RL Stainless Steel EPDM Ductile Iron RL Stainless Steel 460Ductile Iron RL Ductile Iron RL Stainless Steel EPDM Ductile Iron RL Ductile Iron RL 461

Notes:1. For trims 460 the body external surface is epoxy coated with a two-part Epoxy

coating with a minimum dry layer thickness of 6 Mill (150 µm), color red brown. Thebody internal surface, the body seat surface, and the disc surface are natural rubberlined (Ebonite). This lining has a hardness of 75° Shore D, and a layer thickness of1/8". Alternative lining materials are available on request.

2. Contact your sales representative for other materials, configurations and options.

Note:1. For trims 450 through 453 the body external, body internal and disc surfaces

are epoxy coated with a two-part Epoxy coating with a minimum dry layerthickness of 6 Mill (150 µm), color red brown.



501 ND"6

021 ND 084 "

512 ND 068 "

003 ND 0021 "

ab 01( isp 051 )r

ab 61( isp 052 )r

ab 52( isp 053 )r

Bidirectional, tight shutoff performance

Valve size

Maximum pressure

Pressure Rating

Notes:1. 6" to 14" are equipped with a body-seat sleeve instead of body-seat ring.2. 6" to 8" have a circlip instead of screws.3. Pictured is valve size 18".4. For AWWA configured valve an adjustable stuffing box is available.

Parts ListPart Name

1 Body2 Disc3 Retaining-ring4 Seal5 Top shaft6 Bottom shaft7 Bearings8 Bottom cover9 Axial positioning ring10 Body seat1

11 Disc pin12 Seal cover13 Shaft seal14 O-ring15 Screws body seat16 Screws retaining ring17 Screws bottom shaft18 Screws bottom cover19 Screws seal2

20 Axial bearing



Computer simulation of CBCV

24" Butt weld Keystone Dubex – RMI valves in production

Available Technical Options

1. Dry shaft optionAlternative to high corrosion resistance shaft materials, the Keystone Dubex – RMI valve can be equipped with the optional dry shaft provision. In that case, the standard shaft material is better protected from the media by applying a rubber lining. This lining helps protect the standard shaft material against corrosive environments.

2. Combined Butterfly Check Valve (CBCV)

Example of 72" combined butterfly check valve for a powerstation cooling water system

3. Fabricated designFor specific applications, such as vacuum service and buried service, a fabricated Keystone Dubex – RMI valve design is available.

It incorporates all advantages of the triple eccentric resilient seatedbutterfly valves with the features of a butt weld valve having identicalwall thicknesses between pipe and valve.

Having equivalent materials ensures proper welding and avoidscracking due to different material expansion coefficients.

This unique and proven configuration combines the advantages of atight shutoff butterfly valve with the non-slamming action of a high endcheck valve. The combined butterfly check valve is a cost effectivealternative to existing pump protection solutions such as traditionalswing type check valves, and large and complex cone type valves.

Specific advantages of the combined butterfly check valve design:• Power failure to close. • Very short closing times.• Simple, reliable quarter-turn operation eliminating the use of

multi-turn gears on sensitive electrical equipment.

• Controlled closing times in order to avoid water hammer.• Quick opening times. • Non-slamming design. • Bidirectional tight shutoff service. • Available with add on power packs, control panels and cabinets.• In-line adjustable seat.• In-line maintenance.• Non-rubbing soft seat, enhancing the lifetime expectation.• Fully lined versions available for corrosive services.• Custom made.



Tyco Flow Control (TFC) provides the information herein in good faith but makes no representation as to its comprehensiveness or accuracy. This data sheet is intended only as a guide to TFC products and services. Individuals using this data sheet must exercise their independent judgment in evaluating product selection and determining product appropriateness for their particular purpose and system requirements. TFC MAKES NO REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE WITH RESPECT TO THE INFORMATION SET FORTH HEREIN OR THE PRODUCT(S) TO WHICH THE INFORMATION REFERS. ACCORDINGLY, TFC WILL NOT BE RESPONSIBLE FOR DAMAGES (OF ANY KIND OR NATURE, INCLUDING INCIDENTAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES) RESULTING FROM THE USE OF OR RELIANCE UPON THIS INFORMATION. Patents and Patents Pending in the U.S. and foreign countries. Tyco reserves the right to change product designs and specifications without notice. All registered trademarks are the property of their respective owners. Printed in the USA.

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