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Ultra-High Purity (UHP) High-Pressure Diaphragm Valve - 945 Series

Brand: Parker Hannifin

The 945 Series Diaphragm Valve provides excellent reliability and leak integrity, making it ideal for use in UHP applications. 

Available in configurations with flow capacities up to 0.25 Cv and working pressures up to 3,500 psig.

Specifications

Actuation Pressure

  • 75 psig (5 barg) Nominal

Air Inlet Size

  • 1/8”-27 NPT

Body Material

  • VeriClean™ 316L Stainless Steel

Burst Pressure

  • 10,500 psig (724 barg) (AOPHP, I, L, M, S)375 psig (26 barg) (G)

Cap Material

  • 17-4 Stainless Steel

Compression Member Material

  • 316L Stainless Steel Standard, Hastelloy C-22

Diaphragm Material

  • Elgiloy or Equivalent

External Leak Rate

  • ≤ 2 x 10-10 Scc/sec He

Flow Capacity (Cv)

  • Cv 0.25 (AOP, G, S, I)Cv 0.18 (Lever)

Housing Material

  • Anodized Aluminum

Internal Leak Rate

  • ≤ 1 x 10-9 Scc/sec He

Internal Volume (cc)

  • 1.26

Maximum Inlet Pressure (psi)

  • 3,500 psig (241 barg) (AOPHP, I, L, M, S)125 psig (8.6 barg) (G)

Maximum Working Temperature (°C)

  • 66° C

Maximum Working Temperature (°F)

  • 150° F

Minimum Inlet Pressure (psi)

  • Vacuum

Minimum Working Temperature (°C)

  • -40° C

Minimum Working Temperature (°F)

  • -40° F

Nut Material

  • 316L Stainless Steel

Proof Pressure

  • 5,250 psig (362 barg) (AOPHP, I, L, M, S)188 psig (13 barg) (G)

Seat Material

  • PCTFE (Standard), PEEK™ or Vespel

Surface Finish (Ra)

  • 5 Micro inch Ra

Weight (kg)

  • 0.42

Weight (Lbs)

  • 0.9

Documentation

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