KEYSTONE RMI DUBEX DOUBLE FLANGED BUTTERFLY VALVE … · keystone rmi dubex double flanged butterfly valve ... keystone rmi dubex double flanged butterfly valve ... 700 430 215 526

KEYSTONE RMI DUBEX DOUBLE FLANGED BUTTERFLY VALVE

© 2017 Emerson. All Rights Reserved.

The Dubex is a double flanged, triple eccentric resilient seated valve design for services in the water industry

Certification/design• KTW, PED/CE.• AWWA, NSF 61 on applied materials

WRC/NSF

TECHNICAL DATA

Pressure (bar): 16 bar pressure: till DN 2600 larger sizes: contact factoryTemperature (°C): -20 to +100Flange accommodation: ISO flange PN 10, PN 16, PN 25 (standard)Drilling: ISO 2084 (other drillings

on request)Sizes: DN 150 - DN 4000

FEATURES

• Triple eccentric design• Resilient seal firmly integrated in disc for

tight shut off performance.• Fully adjustable resilient disc seal.• In-line replaceable and re-adjustable seal.• Standard body seating surface ductile iron

with Resin lining (Epasfill). Alternative seating surfaces are available.

• Vibration proof disc pins.• Axial bottom shaft bearing carrying the disc

weight when installed with shaft in vertical position.

• Self adjusting V-shaped shaft packing.• Reversed V-shaped packing for vacuum

applications.• Open brackets for packing access and

adjustments are available on request.• Self lubricating bearings.• Horizontal or vertical shaft mounting.• Low head loss, suitable for throttling services.• Face-to-face: Sizes DN 150-2000: ISO 5752, table 4 - flanged long. Sizes DN 2100-3000: AWWA C516• Clockwise closing, optional anti clockwise

closing.• Dry shaft option available.• Suitable for manual gear, electric, hydraulic

and pneumatic actuation.• Hydraulic drop weight drive for pump

protection system available.• Hydrostatic seat testing on 1.1x working

pressure.• Body shell strength test 1.5x working

pressure.

Emerson.com/FinalControl

GENERAL APPLICATION

• Drinking water pump station and transportation/distribution

• Waste water effluent and treatment plants• Reservoirs, circulating water systems• Desalination plants• Cooling water systems (power plants,

general industry)

VCTDS-02122-EN 17/07

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DN 1800 VALVE SHOWN WITH EPOXY RESIN INTERNAL LINING (EPASFILL)

NO RUBBING BETWEEN DISC SEAL AND BODY SEAT

SPECIFIC ADVANTAGES OF THE TRIPLE ECCENTRIC DESIGN

- Torque closing: more torque results in improved tightness.- Closing torque is in direct relation with the shut off 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 time

expectation of the valve.- Large diameter valves are normally in open position. Sediments can therefore settle on the

body seating surface. Due to the specific geometry these sediments will be whipped off during closing, improving sealing performance.

- The resilient disc seal is adjustable, facilitating easy maintenance.- The resilient disc seal is replaceable in line.

3rd eccentricity

2nd eccentricity

Point of rotation

1st eccentricity

Disc seal

DN 3000 VALVE SHOWN

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Retaining sealBodyBody seat ring

Disc seal

Disc

Basic configuration, stainless steelBody external surface: two pack epoxy paintBody internal surface: two pack epoxy paintBody seat ring: stainless steelDisc seal retaining ring: stainless steelDisc: ductile iron, two pack epoxy paint

Lined configuration, stainless steel retaining ringBody external surface : two pack epoxy paintBody internal surface : rubber linedBody seat : ductile iron, rubber linedDisc seal retaining ring : stainless steelDisc : ductile iron, rubber lined

Full lined configurationBody external surface : two pack epoxy paintBody internal surface : rubber linedBody seat : ductile iron, rubber linedDisc seal retaining ring : ductile iron, rubber linedDisc : ductile iron, rubber lined

Optional configurationBody external surface : two pack epoxy paintBody internal surface : two pack epoxy paintBody seat : ductile iron, epoxy resin linedDisc seal retaining ring : ductile iron, two pack epoxy paintDisc : ductile iron, two pack epoxy paint

Optional configuration, metal to metalBody external surface : two pack epoxy paintBody internal surface : two pack epoxy paintBody seat : stainless steelDisc seat retaining ring : NiAlBrDisc : ductile iron, two pack epoxy paint

Standard configuration, stainless steel seat and retaining ringBody external surface : two pack epoxy paintBody internal surface : two pack epoxy paintBody seat ring : stainless steelDisc seal retaining ring : stainless steelDisc : ductile iron, two pack epoxy paint

NOTES• Paint: dry layer thickness of 150 µm, NSF 61 approved.• Rubber lining: natural rubber (Ebonite), with standard thickness of 3 mm, and a Shore D hardness of 75.

Other linings available on request.• Other configurations available on request.


SPECIFIC ADVANTAGES OF THE TRIPLE ECCENTRIC DESIGN

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150 210 105 0 142 F07 35 25 142 F07 35 25 142 F07 35 25 162 F07 35 30 50200 230 115 0 186 F10 42 30 186 F10 42 30 186 F10 42 30 196 F10 42 35 70250 250 125 49 218 F12 52 35 218 F12 52 35 218 F12 52 35 228 F12 52 40 90300 270 135 106 254 F12 52 40 254 F12 52 40 264 F12 52 45 264 F12 52 45 110350 290 145 209 292 F14 60 45 292 F14 60 45 292 F14 60 45 304 F14 60 50 170400 310 155 240 310 F14 60 45 310 F14 60 45 330 F14 60 50 330 F14 60 50 190450 330 165 288 336 F14 60 50 336 F14 60 50 360 F16 75 60 360 F16 75 60 240500 350 175 341 384 F16 75 55 384 F16 75 55 390 F16 75 60 390 F16 75 60 285600 390 195 438 436 F16 75 60 436 F16 75 60 460 F25 105 70 460 F25 105 70 450700 430 215 526 470 F25 105 70 470 F25 105 70 538 F25 105 80 538 F25 105 80 610750 450 225 577 506 F25 105 70 506 F25 105 70 584 F25 110 90 584 F25 105 90 720800 470 235 628 568 F25 105 80 568 F25 105 80 608 F30 105 90 608 F30 130 90 830900 510 255 724 638 F30 115 80 638 F30 115 80 688 F30 115 100 688 F30 130 100 10501000 550 275 818 688 F30 115 90 688 F30 115 90 748 F35 150 120 748 F35 165 120 1435


Top view

Actuator flange

- Drawn is size DN 1200- Flange drillings are according ISO 7005 (PN 10, PN 16, PN 25)- Other flange types on request

VALVE DIMENSIONS (mm)

SizeDN (A)

Face to Face[1] PN 6-flanges/rating PN 10-flanges/rating PN 16-flanges/rating PN 25-flanges/rating Approxmass (kg)

Act. flange

Shaft Act. flange

Shaft Act. flange

Shaft Act. flange

ShaftD D1 Q[2] C F G C F G C F G C F G

2 keys (see note 3)

NOTES1. Sizes DN 150 - 2000: face-to-face ISO 5752 - table 4 - flanged long series1. Sizes DN 2100 – 3000: face-to-face according AWWA C5162. Q is the minimum allowable inside diameter of connecting pipe without any clearance3. Some valve sizes have a double keyway (see bold shaded figures in table)Contact factory for blank or not listed values.Contact factory for alternative flanges and ratings.

LENS SHAPE UP TO DN 2200

FLOW THROUGH SHAPE DISC FROM DN 2200

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1100 590 295 915 738 F30 130 100 738 F30 130 100 828 F35 165 120 828 F35 150 120 15151200 630 315 1000 808 F35 165 100 808 F35 165 100 848 F35 165 120 878 F35 150 140 18301300 670 335 1088 868 F35 165 120 868 F35 165 120 898 F40 190 140 - - - - 24121400 710 355 1175 918 F35 165 120 918 F35 165 120 978 F40 190 140 - - - - 29951500 750 375 1271 994 F40 190 140 994 F40 190 140 1042 F40 190 160 - - - - 36751600 790 395 1357 1046 F40 190 140 1046 F40 190 140 1092 F48 170 160 - - - - 42901800 870 435 1546 1172 F40 165 160 1172 F40 165 160 1212 F48 210 180 - - - - 52502000 950 475 1723 1272 F48 210 180 1272 F48 210 180 1332 F48 190 200 - - - - 62662100 610 305 1912 1342 F48 210 180 1342 F48 210 180 1402 F48 190 200 - - - - 71002200 610 305 2007 1412 F48 200 180 1412 F48 200 180 1452 F60 190 220 - - - - 79552300 610 305 * * F48 200 180 * * 200 * - - - - - - - - 89472400 711 356 2369 1458 F48 200 180 1532 F60 200 200 1532 F60 230 240 - - - - 99602500 711 356 2496 1522 F48 200 180 1602 F60 200 200 - - - - - - - - 114002600 762 381 2555 1572 F48 200 180 1652 F60 225 220 1652 F60 260 260 - - - - 133002700 762 381 2652 1622 F60 200 200 1702 F60 260 220 - - - - - - - - 147002800 762 381 2749 1692 F60 225 200 1752 F60 260 240 - - - - - - - - 157002900 762 381 * * F60 * * * F60 * 240 - - - - - - - - 169273000 813 407 2974 1800 F60 225 220 1860 F60 330 240 - - - - - - - - 18100


NOTES1. Sizes DN 150 - 2000: face-to-face ISO 5752 - table 4 - flanged long series1. Sizes DN 2100 – 3000: face-to-face according AWWA C5162. Q is the minimum allowable inside diameter of connecting pipe without any clearance3. Some valve sizes have a double keyway (see bold shaded figures in table)Contact factory for blank or not listed values.Contact factory for alternative flanges and ratings.

VALVE DIMENSIONS (mm) (continued)

SizeDN (A)

Face to Face[1] PN 6-flanges/rating PN 10-flanges/rating PN 16-flanges/rating PN 25-flanges/rating Approxmass (kg)

Act. Shaft Act. Shaft Act. Shaft Act. ShaftD D1 Q[2] C flange F G C flange F G C flange F G C flange F G

* To be confirmed

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DN 0 10 20 30 40 50 60 70 80 90150 0 37 73 137 218 340 528 858 1116 1272200 0 65 131 244 388 605 939 1525 1984 2262250 0 102 204 381 606 945 1468 2383 3226 3951300 0 147 294 549 873 1360 2113 3431 4646 5690350 0 200 400 747 1188 1851 2876 4670 6324 7745400 0 261 522 976 1552 2418 3757 6100 8260 10116450 0 331 661 1235 1964 3060 4755 7720 10453 12803500 0 408 816 1524 2425 3778 5870 9531 12906 15806600 0 588 1175 2195 3491 5441 8453 13725 19410 25447700 0 800 1600 2988 4752 7406 11506 18681 26420 34636750 0 918 1836 3430 5455 8501 13208 21446 30329 39761800 0 1045 2090 3903 6207 9673 15028 24400 34507 45239900 0 1322 2645 4939 7855 12242 19019 30882 43673 572561000 0 1632 3265 6098 9698 15113 23481 38125 53917 706861050 0 1800 3600 6723 10692 16663 25888 42033 59444 779321100 0 1975 3950 7378 11735 18287 28412 46132 65240 855311200 0 2351 4701 8781 13965 21763 33812 54901 77641 1088161300 0 2759 5518 10305 16390 25542 39682 64432 91120 1277081350 0 2975 5950 11113 17675 27544 42794 69484 98265 1377211400 0 3200 6399 11952 19008 29622 46022 74726 105678 1481111500 0 3673 7346 13720 21821 34005 52832 85782 121314 1700261600 0 4179 8358 15610 24827 38690 60111 97601 138029 1934511650 0 4444 8889 16601 26403 41146 63926 103796 146790 2057311700 0 4718 9435 17623 28027 43678 67859 110182 155821 2183881800 0 5289 10578 19757 31422 48967 76078 123526 174693 2448372000 0 6530 13059 24391 38792 60454 93923 152502 226196 3410042100 0 7199 14398 26891 42769 66650 103550 168133 249382 3759572200 0 7901 15802 29514 46939 73149 113647 184527 273698 4126152300 0 8636 17271 32258 51303 79950 124213 201683 299145 4509782400 0 9403 18806 35124 55861 87053 135249 219602 325723 4910462500 0 10203 20405 38112 60613 94459 146755 238284 353432 5328192600 0 11035 22070 41221 65559 102166 158730 257728 382272 5762972700 0 11900 23801 44453 70699 110177 171175 277934 412243 6214802800 0 12798 25597 47807 76033 118489 184089 298903 443345 6683682900 0 13729 27458 51283 81561 127104 197473 320635 475578 8407113000 0 14692 29384 54881 87283 136020 211327 343129 508942 899691


Kv VALUESOpening angle (deg)

SIMULATION OF DISC DEFLECTION UNDER PRESSURE

EXAMPLE OF CASTING WEIGHT CALCULATION

NOTES1. Listed data are valid for PN 10 rated valve only.2. Rated Kv = volume of water in m3/hr that will pass through valve at a given valve opening at a pressure drop of 1 bar.3. Values may change without notice.4. Kv-values are based on best data available however no responsibility is assumed for inaccuracies.5. Allowable flow velocity ≤ DN 1200: 3.5 m/s; ≥ DN 2000: 2.5 m/s. For higher velocity, please contact factory.In our factory R&D facilities all our large diameter Dubex valves are modeled and optimized for specific flow conditions with CAD and infinite FEM (Finite Element Methods) technologies. Latest computer software is also applied to design the castings and to produce the valves with greatest care and efficiency.

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MATERIAL SPECIFICATIONPartname Material Material number RemarkBody Ductile Iron EN GJS-400-15 Equivalent to GGG 40Disc Ductile Iron EN GJS-400-15Retaining ring Stainless steel EN 1.4404

Ductile iron EN GJS-400-15 Other available materials for body, disc and seat retaining ring likeEN GJS-500-7 A 395 Gr.60-40-18, A 536 Gr.65-45-12, ASTM A 216 WCB, ASTM A 352 LCB, BS 2789 gr.420-12, ASTM A 352 LCB, ASTM A 351-CF8M etc.

Seal EPDM-A 525 (for sizes < DN 2000) Temperature range -20 to +100ºC526 (for sizes > DN 2000)

NBR 518 (for sizes < DN 2000) Temperature range -10 to +80ºC511 (for sizes > DN 2000)

Shaft Stainless steel EN 1.4057 Alternatives: EN 1.4401, EN 1.4462 (Duplex)Bearings Self lubricating PTFE-lined Bronze bearings alternativelyBody-seat Stainless steel EN 1.4404 Alternative: Epasfill lined ductile iron, rubber linedDisc pin Stainless steel 1.4057 Alternative: EN 1.4462 (Duplex)Seal cover Stainless steel EN 1.4401Bottom cover Ductile Iron EN GJS-40-15Axial positioning ring Stainless steel EN 1.4401O-rings and seal NBR-rubberInternal screws Stainless steel EN 1.4401 (A4)Axial bearings Glass cloth reinforced PTFEAdjustable stuffing boxBracket Ductile iron EN GJS-400-15Gland Ductile iron EN GJS-400-15Packing Braided TFE Hamar TP

MATERIAL SELECTIONBody Disc Body seat Shaft Disc Seal Retaining ring Config.Ductile iron Ductile iron Stainless Steel 316 Stainless Steel 431 EPDM Stainless Steel 316 1Ductile iron Ductile iron Ductile Iron (Epasfill) Stainless Steel 431 EPDM Stainless Steel 316 2Ductile iron Ductile iron Stainless Steel 316 Stainless Steel 431 EPDM Ductile iron 3Ductile iron Ductile iron Ductile Iron (Epasfill) Stainless Steel 431 EPDM Ductile iron 4Ductile iron RL Ductile iron RL Ductile iron RL Stainless Steel 431 EPDM Stainless Steel 316 5Ductile iron RL Ductile iron RL Ductile iron RL Stainless Steel 431 EPDM Ductile iron RL 6Ductile iron RL Ductile iron RL Ductile iron RL Duplex SS 1.4462 EPDM Stainless Steel 316 7Ductile iron RL Ductile iron RL Ductile iron RL Duplex SS 1.4462 EPDM Ductile iron RL 8

NOTES• Configurations 1 - 4 The body external and internal and disc (ring) surfaces are covered with a two-pack epoxy coating with a minimum dry layer thickness of 150 micron (6 mill),

color red-brown.• Configurations 5 - 8 The body external is covered with a two-pack epoxy coating with a minimum dry layer thickness of 150 micron (6 mill), color red-brown. Their body internal surface incl. body seat surface, the disc surface and the seal retaining ring are natural-rubber lined (ebonite). Their bodies always incorporate a fully

“dry body” design. This ebonite lining has a Shore (A) hardness of 75°, and a layer thickness of min. 3 mm. Alternative lining materials are available on request. In all 8 configurations, the disc pins are applied in the same material as used for the shafts.• Contact factory for other materials, configurations and options.

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NOTES1. DN 150 - DN 350 are equipped with a body-seat sleeve instead of body-seat ring.2. DN 150 - DN 200 have a circlip instead of screws.Pictured is valve size DN 450.

PARTS LISTPart Name1 Body2 Disc3 Retaining-ring4 Seal5 Top shaft6 Bottom shaft7 Bearings8 Bottom cover9 Axial positioning ring10 Body seat[1]


Part Name11 Disc pin12 Seal cover13 Shaft seal14 O-ring15 Screws body seat16 Screws retaining ring17 Screws bottom shaft18 Screws bottom cover19 Screws seal[2]

20 Axial bearing

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AVAILABLE TECHNICAL OPTIONS

1. Dry shaft optionAlternative to high corrosion resistance shaft materials the Dubex valve can be equipped with the optional dry shaft provision. In that case the standard shaft material is protected from the medium by applying rubber lining. This lining protects the standard shaft material against corrosive environments.

2. Combined Butterfly Check Valve (CBCV)

EXAMPLE OF DN 1800 COMBINED BUTTERFLY CHECK VALVE FOR A POWER STATION COOLING WATER SYSTEM

CAD STUDY OF CBCV

DN 600 BUTT WELD DUBEX VALVES IN PRODUCTION

This unique and proven configuration combines the advantages of the tight shut off butterfly valve with the non slamming action of high end butterfly valves. Such design is a cost effective alternative to existing pump protection solutions such as traditional swing type check valves, and large and complex cone type valve.Specific advantages of the combined butterfly check valve design:- Power failure to close - Controlled closing times in order to avoid water hammer - Quick opening times - Non slamming design - Bi-directional tight shut off service - Available with add on power packs, control panels and cabinets- In line adjustable seat- In line maintenance- Non rubbing soft seat, enhancing the life time expectation- Fully lined versions available for corrosive services- Custom made

3. Fabricated design up to DN 1800For specific applications, such as vacuum service and buried service steel pipe lines, we do produce the fabricated Dubex valve design.It incorporates all advantages of the triple eccentric resilient seated butterfly valves with the features of a butt weld valve having identical wall thicknesses between pipe and valve.Having equivalent materials ensures proper welding and avoids cracking due to different material expansions coefficients.

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KEYSTONE RMI DUBEX DOUBLE FLANGED BUTTERFLY VALVE … · keystone rmi dubex double flanged butterfly valve ... keystone rmi dubex double flanged butterfly valve ... 700 430 215 526

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