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ROCKWOOD RXSO

BRONZE SAFETY RELIEF VALVES

0  -  400  PSIG

Our RXSO Type valves are designed for stationary cryogenic storage tanks, anywhere where noxious or expensive liquids or gases place a premium on seal quality, dual safety relief systems, overpressure relief of tanks, pipelines, vessels, & pumps, air & gas compressors, and corrosive industrial applications.

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FEATURES

 

  • Special PTFE seat, making bubble-tight seals possible to over 90% of set pressures per spec API 527; not applicable to steam.

  • Adjustable blowdown ring

  • ASME UV Certified

  • Cleaned and packaged for use in O2 service in compliance with the CGA specification G-4.1

 

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Additional Cleaning Specifications:

 

  • 4WPI-SW70003

  • GS-38

  • ES.660.503

  • GS-40

 

rockwood safety relief valve bronze
Checklist

APPLICABLE CODES

Designed and Manufactured to Meet:

 

  • CGA S-12 and S-13​

  • V-4301 (Cryogenic Non-Oxygen)

  • V-4401 (Oxygen)

  • ASME sec VIII

  • API 527

  • 2014/68/EU PED (MDMT -325°F)

  • CRN 0G22625.5C

 

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TECHNICAL DATA

Operating Ranges:

  • Temperature: -423°F to +400°F 

  • Relief Pressure to 400 PSIG

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Material of Construction:

  • Shell: Cast Bronze, ASME SB-62

  • Base: Forged Brass, Alloy C37700

  • Trim: Copper Alloy

  • Spring: Stainless Steel, 17-7 PH ASTM, A-313, Type 631

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Options:

  • BPS threads available on most sizes

  • Lever operation

Testing:

Each valve is set, tested, re-tested and sealed at the factory to the customer's specifications.​

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Sizes:

​Inlet - 1/2" to 2"​

Outlet - 3/4" to 2-1/2"

Download the Product Sheet!

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