Cyrus Shank 803-250 Safety Relief Valve, 1/2", 3/4", Ductile Iron

The 803 relief valve has an angle style and a larger outlet size. The ASME certified slope of 1.978 yields, for example, a capacity of 43.7 lbs per minute of air @ 250# set pressure.

Design Features:

• National Board Certification #: 51129
• Set Pressure Range: 50-400 PSI in 25 PSI  increments.
  • Special Settings can be made at no extra charge and typically takes 1-2 extra days;

• Each valve undergoes 3 separate test sequences for set pressures and seals, and then are lock-wired for security

• All Cyrus Shank relief valves are manufactured in accordance with ASME Boiler and Pressure Vessel Code Section VIII Division I and stamped with the ASME Certification Mark with UV Designator.

• All Cyrus Shank relief valve capacities are certified by the National Board of Boiler and Pressure Vessel Inspectors and stamped with the NB Certification Mark.