156:" (saddle) and the other (sometimes called a "full bore or straight-through" valve) seals over a seat. In general, straight-through diaphragm valves are used in on-off applications and weir-type diaphragm valves are used for control or throttling applications. While diaphragm valves usually come in two-port forms (2/2-way diaphragm valve), they can also come with three ports (3/2-way diaphragm valves also called T-valves) and more (so called block-valves). When more than three ports are included, they generally require more than one diaphragm seat; however, special dual actuators can handle more ports with one membrane.
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Many diaphragm valve body dimensions follow the
Manufacturers Standardization Society MSS SP-88 However, most non-diaphragm valves used in industrial applications are built to the ANSI/ASME B16.10 standard. standard. The different standards makes it difficult to use diaphragm valves as an alternative
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to most other industrial valves. Some manufacturers offer diaphragm valves that conform to ANSI B16.10 standards thereby making these diaphragm valves interchangeable with most solid wedge, double disc, and resilient wedge gate valves as well as short pattern plug and ball valves.
192:; in this type of valve, air pressure is applied through a pilot valve into the actuator which in turn raises the diaphragm and opens the valve. This type of valve is one of the more common valves used in operations where valve speed is a necessity.
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Diaphragm valves can be manual or automated. Automated diaphragm valves may use pneumatic, hydraulic or electric actuators along with accessories such as solenoid valves, limit switches and positioners.
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body with two or more ports, a flexible diaphragm, and a "weir or saddle" or seat upon which the diaphragm closes the valve. The valve body may be constructed from
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Abrasive applications, where the body lining can be designed to withstand abrasion and the diaphragm can be easily replaced once worn out
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In addition to the well known, two way shut off or throttling diaphragm valve, other types include: Three way zero deadleg valve,
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Corrosive applications, where the body and diaphragm materials can be chosen for chemical compatibility. (E.G. Acids, Bases etc.)
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diaphragm valves also exist for higher pressure and lower speed operations. Many diaphragm valves are also controlled manually.
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Depending on temperature, pressure and chemical resistance, one of the following is used:
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e.g. manual, pneumatic, hydraulic, electric etc. The most common diaphragm valves use
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There are two main categories of diaphragm valves: one type seals over a "
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640:"ASME B16.5/ASME B16.10/ASME B16.34 - Valves and Fittings Package"
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Diaphragm valves have many applications in the following markets:
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access port, block and bleed, valbow and tank bottom valve.
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Diaphragm valves can be controlled by various types of
49:. Unsourced material may be challenged and removed.
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284:) also known as LDPE, MDPE and HDPE (see note)
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263:, unplasticized) also known as PVCu or uPVC
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676:Internal Structure of the diaphragm valve
481:Diaphragm Valves are ideally suited for:
109:Learn how and when to remove this message
685:Pneumatic Actuators for diaphragm valves
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1767:Plumbing & Drainage Institute (PDI)
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1717:Mechanical, electrical, and plumbing
47:adding citations to reliable sources
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132:(or membrane valves) consists of a
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1037:Push-to-pull compression fittings
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266:PVC-C (Polyvinyl chloride, post
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254:Acrylonitrile butadiene styrene
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667:History of the diaphragm valve
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419:Unlined or Rubber Lined Type:
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1328:Reduced pressure zone device
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125:Rubber Lined Diaphragm Valve
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807:Onsite sewage facility
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995:National Pipe Thread
897:Water supply network
43:improve this article
1849:Template:Wastewater
1707:Hydrostatic testing
1348:Rooftop water tower
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413:Diaphragm materials
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190:pneumatic actuators
16:Flow control device
1803:Waterborne disease
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1303:Pressure regulator
1198:Double check valve
1173:Concentric reducer
974:Garden Hose Thread
867:Thermal insulation
737:Air gap (plumbing)
620:www.techstreet.com
428:NBR/Nitrile/Buna-N
261:Polyvinyl chloride
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1839:Template:Sewerage
1786:Health and safety
1762:NSF International
1572:Specialized tools
1451:Drinking fountain
1418:Plumbing fixtures
1298:Plug (sanitation)
1283:Nipple (plumbing)
1203:Eccentric reducer
1183:Coupling (piping)
1148:Chemigation valve
1001:Nominal Pipe Size
964:Ductile iron pipe
862:Thermal expansion
644:webstore.ansi.org
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58:"Diaphragm valve"
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1844:Template:Toilets
1609:Flare-nut wrench
1368:Submersible pump
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575:Control valve
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551:Bioprocessing
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275:Polypropylene
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60: –
59:
55:
54:Find sources:
48:
44:
38:
37:
32:This article
30:
26:
21:
20:
1722:Pipe marking
1695:and services
1691:Professions,
1639:Strap wrench
1579:Basin wrench
1558:Water heater
1553:Water filter
1466:Flush toilet
1441:Dehumidifier
1383:Trench drain
1363:Street elbow
1353:Safety valve
1338:Relief valve
1278:Needle valve
1263:Grinder pump
1233:Flow limiter
1218:Float switch
1187:
1153:Chopper pump
1133:Booster pump
1082:Tube bending
1027:Pipe support
892:Water hammer
872:Thermosiphon
802:Neutral axis
647:. Retrieved
643:
634:
623:. Retrieved
619:
610:
590:Needle valve
502:
480:
477:Applications
318:Unlined type
312:
282:Polyethylene
230:Carbon Steel
225:Ductile iron
194:
183:
174:
162:
158:
151:
129:
128:
105:
99:January 2021
96:
86:
79:
72:
65:
53:
41:Please help
36:verification
33:
1667:Flow sensor
1655:and control
1653:Measurement
1644:Tap and die
1619:Pipe wrench
1604:Driving cap
1496:Laundry tub
1373:Tap (valve)
1358:Sewage pump
1343:Riser clamp
1288:Pinch valve
1258:Grease trap
1253:Globe valve
1243:Flushometer
1228:Floor drain
1223:Float valve
1143:Check valve
1128:Bleed screw
902:Water table
842:Storm sewer
728:Fundamental
595:Pinch valve
585:Globe valve
401:Green Glass
268:chlorinated
1864:Categories
1727:Pipefitter
1614:Pipecutter
1594:Core drill
1481:Humidifier
1446:Dishwasher
1408:Zone valve
1403:Water tank
1248:Gate valve
1123:Ball valve
1096:Components
916:Technology
887:Wastewater
847:Stormwater
649:2019-07-06
625:2019-07-06
602:References
580:Gate valve
565:Ball valve
513:Wastewater
405:Blue Glass
171:Valve body
148:Categories
69:newspapers
1746:Industry
1732:Pipelayer
1589:Borescope
1584:Blowtorch
1523:Sump pump
1057:Soldering
1022:Pipe dope
985:Hydronics
857:Tap water
822:Sewer gas
787:Heat trap
782:Greywater
752:Corrosion
220:Cast Iron
196:Hydraulic
186:actuators
180:Actuators
1812:See also
1798:Scalding
1486:Icemaker
1273:Manifold
832:Sewerage
812:Pressure
767:Fuel gas
742:Backflow
730:concepts
721:Plumbing
558:See also
542:Minerals
528:Chemical
345:Neoprene
240:Alloy 20
1737:Plumber
1693:trades,
1634:Plunger
1543:Washlet
1431:Bathtub
1333:Reducer
1163:Cistern
1067:Swaging
1047:Sealant
923:Brazing
499:Markets
454:Leather
399:Lined (
326:Ebonite
259:PVC-U (
247:Plastic
165:sterile
138:plastic
83:scholar
1875:Valves
1824:Piping
1533:Urinal
1501:Shower
1007:O-ring
980:Gasket
837:Siphon
827:Sewage
538:Mining
533:Cement
443:BUNA-N
439:/Viton
375:Tefzel
340:BUNA-N
287:PVDF (
249:type:
216:type:
85:
78:
71:
64:
56:
1436:Bidet
1398:Valve
1042:Putty
1012:Oakum
1003:(NPS)
997:(NPT)
976:(GHT)
930:(BSP)
518:Power
509:Water
397:Glass
390:HALAR
385:XYLON
380:KYNAR
252:ABS (
214:Steel
209:Brass
142:metal
134:valve
90:JSTOR
76:books
1513:Sink
1318:Pump
907:Well
797:Leak
549:and
540:and
511:and
432:EPDM
335:EPDM
295:PTFE
280:PE (
273:PP (
154:weir
62:news
447:SI/
437:FKM
422:NR/
403:or
360:PFA
355:FEP
300:PFA
45:by
1866::
678:,
669:,
642:.
618:.
370:PP
365:PO
140:,
713:e
706:t
699:v
652:.
628:.
407:)
328:,
291:)
277:)
256:)
112:)
106:(
101:)
97:(
87:·
80:·
73:·
66:·
39:.
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