Cyrus Shank 801 DS-300 Dual Assembly Without Unions, 1/2", 3/4", Carbon Steel

This low capacity relief valve has been designed for use in small pressure vessels. The ASME certified slope of 0.73 yields, for example, a capacity of 9.3 lbs per minute of air @ 250# set pressure.

Key Features:

• National Board Certification #: 51253
• 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.