Series 60 and 80 Pressure Relief Valves

Types 81 and 83 are direct spring operated valves designed with special patented internals and soft seats to provide superior performance. This range is capable of solving the most difficult pressure relief problems with valves suitable for gas, vapor, and steam service. Type 81 and 83 valves carry the ASME Section VIII Code Stamp.

Orifice Sizes: 0.049 in² [0.32 cm²] and D through J Connections: 1/2” x 3/4” to 2” x 3” Inlet Flange Ratings: ANSI 150, 300, 600, 900, 1500, 2500 Maximum Temperature: 550°F [288°C] Minimum Pressure: 20 psig [1.4 barg] Maximum Pressure: 10,000 psig [690 barg]

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