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  • Set Pressures to 400 psig
  • Temperature -423°F to +400°F
  • Special Teflon® seat, making bubble-tight seals possible for over 90% of set pressures per spec API 527; not applicable to steam.
  • Adjustable blow down ring.
  • Cleaned and packaged for use in oxygen service in compliance with CGA specification G-4.1
  • Electropolishing of base and proper assembly for high purity and electronic applications.
Unit of Measure



N/A 760

Valve Service

N/A Air/Gas/Liquid Non Code


N/A None Coded

Body Material

N/A 316 Stainless Steel

Seal Material

N/A Teflon®

Cap Type

N/A Plain Cap


N/A 1/2" MNPT


N/A 3/4" Female NPT


N/A .75 in

Cracking Pressure

N/A 10 to 400 psig

Operating Pressure

N/A 400 psig

Operating Temperature

N/A -423 to 400 ºF

Dimension A - Overall Height

N/A 5.78 in

Dimension B - Outlet Height

N/A 2.44 in

Dimension C - Outlet Width

N/A 1.34 in


N/A 2 lbs



  • Especially recommended where corrosive or expensive liquids or gases place a premium on seal quality.
  • Stationary Cryogenic storage tanks
  • Dual Safety relief systems
  • Overpressure relief of tanks, pipelines, vessels, pumps
  • Air and gas compressors

  • Materials of Construction


  • Shell - Investment Cast 316SS, ASME SA-351
  • Base - Investment Cast 316SS, ASME SA-351
  • Trim - ASME SA-479
  • Spring - Stainless Steel, 17-7 PH ASTM, A-313,Type 631

  • Safety

    N/A For Your Safety
    It is solely the responsibility of the system designer and user to select products suitable for their specific application requirements and to ensure proper installation, operation, and maintenance of these products. Material compatibility, product ratings and application details should be considered in the selection. Improper selection or use of products described herein can cause personal injury or property damage.

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    1533 Gehman Road | Harleysville, PA 19438 | Phone: 267-933-6300 | Fax: 267-933-6305 | Toll Free: 800-645-6733 | Email: [email protected]
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