Model: 391-1021
Safety Relief ValveProperties:
A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes valve (1), relief, pressure and temperature.
Part 391-1021 NSN 4820-01-317-1697
Material Classification
Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicatorsPackaging & Shipping
Freight Classification
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Schedule B and Export
- Schedule B: 8481400000
- SITC: 74740
- End Use: Industrial machines, other
- NAICS: 332911
- USDA: 1
Freight Class: Safety or relief valves
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