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Series Stainless CRV Cryogenic Relief Valve

Brand: Generant Inc

The Generant Series Stainless Steel CRV Cryogenic Relief Valve is a spring reference over pressure protection device. 

The Stainless CRV is supplied cleaned and packaged for oxygen service making it an ideal choice for most cryogenic relief valve applications. 

The valve can be ordered with set pressures ranging from psig: 10 to 750 (kPa: 69 to 5,170, bar: 0.69 to 51.7) and come factory preset and permanently locked. 

Relief pressure can not be altered or adjusted in the field. Seat and poppet geometry combined with optimized spring ranges provide high flow rates with minimum pressure accumulation.

Compact design and availability of a variety of inlet and outlet configurations reduces size and piping requirements. 

Relief pressure can be discharged to atmosphere or to a downstream connection. The CRV can be specified with PCTFE (set pressures above psig: 50 (kPa: 354, bar: 3.54), Viton, and Fluorsilicone seals.
Features
  • Available in NPT, metal to metal face seal and Bi-lok dual ferrule tube connections
  • High flow capacity and excellent reseal performance
  • Discharge to atmosphere or a wide variety of inline piping configurations
  • Supplied factory preset set and permanently locked for tamper proof service
  • 100% factory tested for leakage, crack and reseal performance
  • Optional deflector cap available for diverting exhausted gas
  • Cleaned and packaged for oxygen service

Specifications

Brand

Enclosure, Body Material

  • 316 Stainless Steel

Materials of Construction

  • Poppet, Spring Retainer, In-Line Adapter, Ferrules: 316 Stainless Steel - ASTM A479

Nominal Pressure

  • psig: 10 to 750 (kPa: 69 to 5,170, bar: 0.69 to 51.7)

NPT Connection

  • 1/2” NPT Female
  • 1/2” NPT Male
  • 1/4” NPT Female
  • 1/4” NPT Male
  • 3/8” NPT Female

Nut & Bolt Material

  • Nut: 316 Stainless Steel, (ASTM A479)

Orifice Size

  • 0.18” to 0.4” (4.57 to 10.16 mm)

Screw Material

  • Seat Screw: 316 Stainless Steel

Seat / Seal Material

  • Seal: PCTFE (ASTM D1430)
  • Seal: Teflon
  • Seal: Viton

Spring Material

  • 302 Stainless Steel - ASTM A313
  • 631 Stainless Steel (17-7 PH) (ASTM A313)

Temperature Range

  • -196° to 200° C (-320° to 392° F)

Tolerance

  • Factory Set: ± 5 % of Specified Pressure
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