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UHP Diaphragm Y-Valve - Manual or Air-Actuated (Vacuum to 250 psig) - 955Y Series

Brand: Parker Hannifin

The 955Y Series Diaphragm Valve (Y block body) combines two high flow capacity valves into a single compact body simplifying the integration of a purge system into a gas manifold while improving the effectiveness of the purge process.

Specifications

Flow Capacity (Cᵥ)

  • Cᵥ 0.35 (Purge Valve)
  • Cᵥ 0.43 (Process Valve)

Weight

  • 0.98 kg (2.11 lbs)

Diaphragm Material

  • Elgiloy, Equivalent

Cap Material

  • 17-4 Stainless Steel

External Leak Rate

  • ≤ 2 x 10⁻¹⁰ Scc/sec He

Maximum Working Temperature

  • 66°C (150°F)

Burst Pressure

  • 750 psig (52 barg)

Proof Pressure

  • 375 psig (26 barg)

Maximum Inlet Pressure

  • 250 psig / 17.22 barg (NC, M)
  • 125 psig / 8.62 barg (NO)

Seat Material

  • PCTFE (Standard), PEEK, Vespel

Housing Material

  • Anodized Aluminum

Surface Finish

  • 5 Micro inch Ra
  • 10 Micro inch Ra (Standard)

Minimum Working Temperature

  • -40°C (-40°F)

Air Inlet Size

  • ⅛”-27 NPT

Nut Material

  • 17-4 Stainless Steel

Internal Leak Rate

  • ≤ 4 x 10⁻⁹ Scc/sec He

Internal Volume (cc)

  • 4.49 cc

Body Material

  • VeriClean 316L Stainless Steel

Actuation Pressure

  • 75 psig (5 barg) Nominal
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