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UHP Single Stage, Tied-Diaphragm Pressure Regulator (up to 3, 500 psig Inlet) - 959W & NPR959W Series

Brand: Parker Hannifin

959W Series Tied-diaphragm Pressure Regulators are designed for high-pressure UHP applications. 

The series offers excellent reliability and leak integrity, and is ideal for use in gas cabinets, valve manifold boxes, and upstream process lines.

Specifications

Body Material

  • 316L Stainless Steel

Burst Pressure

  • 10,500 psig (724 barg)

Cap Material

  • Nickel-Plated Brass

Compression Member Material

  • 316L Stainless Steel Standard, Hastelloy C-22

Diaphragm Material

  • 316L Stainless Steel Standard, Hastelloy C-22

External Leak Rate

  • < 2 x 10-10 Scc/sec He

Flow Capacity (Cv)

  • Cv 0.04 (Standard), Cv 0.2

Internal Leak Rate

  • < 2 x 10-9 Scc/sec He

Internal Volume (cc)

  • 5.41 cc without Fittings

Knob Material

  • ABS (Black) (959W), ABS (White) (NPR959W)

Maximum Inlet Pressure (barg)

  • Cv 0.04 240 barg, Cv 0.2 86 barg

Maximum Inlet Pressure (psig)

  • Cv 0.04 3,500 psig, Cv 0.2 1,250 psig

Maximum Working Temperature (°C)

  • 65° C

Maximum Working Temperature (°F)

  • 150° F

Minimum Working Temperature (°C)

  • -40° C

Minimum Working Temperature (°F)

  • -40° F

Nut Material

  • 316L Stainless Steel

Outlet Pressure

  • 1-30 psig (2 barg), 3-100 psig (7 barg), 5-150 psig (10.3 barg) (959W),-25” Hg - 0-30 psig (NPR959W)

Poppet Material

  • 316L Stainless Steel Standard, Hastelloy C-22

Poppet Screen Material

  • Hastelloy C-22

Poppet Spring Material

  • 316L Stainless Steel Standard, Inconel

Proof Pressure

  • 5,250 psig (362 barg)

Seat Material

  • PCTFE (Standard), Vespel

Surface Finish (Ra)

  • 15-20 Micro inch Ra (Standard), 10 Micro inch Ra

Weight (kg)

  • 0.9

Weight (Lbs)

  • 2
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