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Diaphragm Valve

Diaphragm Valve

Weir Type Diaphragm Valves

Weir Type Diaphragm Valves

Straight Through Diaphragm Valve

Straight Through Diaphragm Valve

Table of Content

Specification Of Manual, 2/ 3-way and Sanitary Diaphragm Valves

Specification of Diaphragm Valve

Materials of construction The cap is Nitronic 60 stainless (optional Hastelloy C or Type 316 stainless), with remaining metal parts of 300 series stainless. The diaphragm is formed from a specialized polyimide.
Dimensions Valve diameter is 35 mm (1.375"), height is 42 mm (1.625"), and weight is less than 255 g (9 oz).
Fittings The valve cap has Valco 1/32" or 1/16" ZDV fitting details - a rugged design which allows easy replacement of tubing or of the valve itself.
Bore Standard bore size is 0.40 mm (.016" ), Optional bore sizes are 0.25 mm (.010") and 0.75 mm (.030").
Temperature and pressure The sampling/switching valve can be operated at temperatures up to 175°C at 300 psi gas. Specs for internal sample valves are 50°C at 750 psi liquid.
Actuation Actuator air (40-50 psi) is supplied to a side port with 10-32 female threads, permitting use of a variety of compression or barbed fittings. A 3-way solenoid is required for actuation. (Order separately.)
Lifetime Diaphragm valve lifetime can exceed 1,000,000 cycles at ambient temperature or 500,000 cycles at 175°C.

Weir Type Diaphragm Valves Material

Operation Manual, pneumatic, motorized
Connections Union ends, clamps, flanges, flares, threaded sockets, threaded spigots, solvent cement sockets, solvent cement spigots, hose barbs, butt weld spigots
Operating pressure 0 – 10 bar
Body material Metal: Stainless steel, cast iron, brass, SG iron, cast steel, hard or soft rubber lining
Plastic: ABS, PFA, PP, PVC, PVDF, inliner PP-H/outliner PP reinforced
Media temperature -20 - 150 °C
Nominal sizes DN 4 – 300

Various Types of Straight Through Diaphragm Valve

Pneumatic Diaphragm Valve With Stainless Steel Actuator

Pneumatic Diaphragm Valve With Stainless Steel Actuator

Sanitary Diaphragm Valve With Clamped Ends

Sanitary Diaphragm Valve With Clamped Ends

Diaphragm Valve (2/2-way)

Diaphragm Valve (2/2-way)

Pharmaceutical Epdm Diaphragm Valve

Pharmaceutical Epdm Diaphragm Valve

Pneumatic Actuated Diaphragm Type Single-seated Control Valve

Pneumatic Actuated Diaphragm Type Single-seated Control Valve

Sanitary Stainless Steel Manually Operated Diaphragm Valve

Sanitary Stainless Steel Manually Operated Diaphragm Valve

Ss316 Sanitary Zero Dead Leg T Type Diaphragm Valve For Pharmaceutics

Ss316 Sanitary Zero Dead Leg T Type Diaphragm Valve For Pharmaceutics

1 Inch Normally Closed 2 Position 2 Way Pilot Diaphragm Valve

1 Inch Normally Closed 2 Position 2 Way Pilot Diaphragm Valve

Dn15-dn300 Upvc Plastic Valve Diaphragm Valve With Flange Connection

Dn15-dn300 Upvc Plastic Valve Diaphragm Valve With Flange Connection

3 Inch Steel Pneumatic Diaphragm Oil Control Valve With Positioner

3 Inch Steel Pneumatic Diaphragm Oil Control Valve With Positioner

Threaded Diaphragm Valve Size Range

Diameter ranges: From 0.5" to 14".
Connection to the pipe: Butt-weld, Clamp, Flange, Screwed, Socket and Spigot Weld.
Diaphragm material: Buna N (NBR), Butyl (CIIR), Ethylene Propylene Rubber (EPDM), Hypalon® (CSM), Natural Rubber (NR), Neoprene (CR), PTFE and Viton® (FKM).
Temperature range: From -10ºc (-14ºF) up to +170ºC (+350ºF) - (Depending on material).
Pressure range: From 13.8 bar (200psi) - (Depending on material).
Fluid Velocity limitation: 15-20 ft/sec for clean fluids and 8-10 ft/sec for slurries.

Construction of Pneumatic Diaphragm Valve

Material

Size

Temperature

Applications

inches

mm

ºF

ºC

Butyl rubber

0.6 - 14

15 - 350

- 22 to 134

- 30 to 90

Acids and alkalis

Nitril rubber

0.6 - 14

15 - 350

14 to 134

-10 to 90

Oils, fats and fuels

Neoprene

0.6 - 14

15 - 350

- 4 to 134

- 20 to 90

Oils, greases, air and radioactive fluids

Natural/synthetic rubber

0.6 - 14

15 - 350

- 40 to 134

- 40 to 90

Abrasives, brewing and dilute mineral acids

White natural rubber

0.6 - 5

15 - 125

- 31 to 134

- 35 to 90

Foods and pharmaceuticals

White butyl

0.6 - 6

15 - 150

- 22 to 212

- 30 to 100

Natural color, food, plastics and pharmaceuticals

Viton

0.6 - 14

15 - 350

41 to 284

5 to 140

Hydrocarbon acids, sulphture and chlorine applications

Hypalon

0.6 - 14

15 - 350

32 to 134

0 to 90

Acid and ozone resistant

Butyl rubber

0.6 - 14

15 - 350

- 4 to 248

- 20 to 120

Hot water and intermittent steam services, sugar refining

Rubber Lined Diaphragm Valve Standard Code

  • BS 5156 - Specification for diaphragm valves
  • MSS SP 61 - Pressure testing of steel valves
  • MSS SP 25 - Standard marking system for valves, fittings, flanges & unions
  • MSS SP 45 - Bypass and drain connections

Screwed End Diaphragm Valve Dimension

ACTUATOR MODEL EFFECTIVE Inch2 BONNET MOUNT DIA. TRAVEL ФD H H1 H2 H3 H4 H5
MVS-D 106 95 54 32 371 430 - 770 - 670 -
MVS-D 106 95 54 45 371 590 - 550 - 725 -
MVS-D 123 12 32 14.3 150 235 - 335 - - -
MVS-D 141 30 32 19 218 295 - 390 - - -
MVS-D 141 30 54 32 218 325 - 475 - - -
MVS-D 166 55 54 28 286 410 - 540 - 640 -
MVS-D 166 55 54 38 286 325 - 510 - 690 -
MVS-D 251 140 90.5 70 443 750 - 1000 - 1000 -
MVS-D 251 140 54 38 443 750 - 1000 - 860 -
MVS-D 411 300 90.5 45 599 950 - - - 1230 -
MVS-D 411 300 90.5 70/76 599 950 - - - 1275 -
MVS-R 106 95 54 32 371 - 680 - 700 - 670
MVS-R 106 95 54 45 371 - 700 - 720 - 725
MVS-R 123 12 32 14.3 150 - 370 - 365 - -
MVS-R 141 30 32 19 218 - 440 - 400 - -
MVS-R 141 30 54 32 218 - 510 - 520 - -
MVS-R 166 55 54 28 286 - 550 - 570 - 640
MVS-R 166 55 54 38 286 - 570 - 590 - 690
MVS-R 251 140 90.5 70 443 - 870 - 890 - 1000
MVS-R 251 140 54 38 443 - 840 - 640 - 860
MVS-R 411 300 90.5 45 599 - 980 - - - 1230
MVS-R 411 300 90.5 70/76 599 - 1070 - - - 1275

Uses of Stainless Steel Diaphragm Valve

  • Chemical Processing
  • Mining &Mineral Processing
  • Power generation
  • Water Treatment & Filtration
  • Electroplating
  • Steel Production
  • Food & Beverage
  • Paints & Coatings
  • Textiles & Leather
  • Semiconductors
  • Pharmaceuticals
  • Sugar
  • Pulp & Paper.

3-way Diaphragm Valve Price List

Diaphragm Valves Price List Straight Diaphragm Valve Price
Pneumatic Diaphragm Valve US $25.00-$26.00 / Piece
200X diaphragm pressure reducing hydraulic valve US $30.00 / Ton
stainless steel sanitary diaphragm valve US $1.00-$999.00 / Piece
pneumatic diaphragm valves in 316l US $27.80-$28.00 / Set

Advantage & Disadvantages of 2 Way Diaphragm Valve

Advantages

  • Can be used as on-off and throttling service valves.
  • Offer good chemical resistance due to variety of linings available.
  • Stem leakage is eliminated.
  • Provides bubble-tight service.

Disadvantages

  • The weir may prevent full drainage of piping.
  • The diaphragm may also limit the hydrostatic pressure.
  • Diaphragm valves are available in limited sizes, usually NPS ¹⁄₂ to 12 (DN 15 to 300).
Large Inventory of Motorized and Diaphragm Solenoid Valves in Brass

Dimension Chart of Manual Diaphragm Valve

Size (mm) F/F Lined F/F Unlined H1 L H ØZ
15 114 108 45 75 117 31.7
20 123 117 50 85 117 31.7
25 133 127 55 97 117 31.7
32 152 146 60 90 117 31.7
40 162 159 70 110 117 31.7
50 196 190 75 135 117 53.9
65 222 216 90 155 143 53.9
80 261 254 95 175 143 53.9
100 312 305 115 200 143 53.9
125 346 350 125 230 143 53.9
150 414 406 140 360 197 69.8
200 531 521 175 370 197 69.8
250 645 635 204 559 229 69.8
300 759 749 242 651 229 69.8
Check Sizes and Dimension of Actuated and Diaphragm Control & Gas Valves

Sanitary Diaphragm Valves Size Chart

Diameter 35 mm (1.375")
Height 42 mm (1.625")
Weight less than 255 g (9 oz)
Cap 1/32" or 1/16"

Types of Valves

Other valves

Products

Dimension Standards

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