Model: 557-2A
Check ValveProperties:
A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
Part 557-2A NSN 4820-00-486-1876
Material Classification
Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicatorsFreight Classification
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Schedule B and Export
- Schedule B: 8481309000
- SITC: 74730
- End Use: Industrial machines, other
- NAICS: 332911
- USDA: 1
Freight Class: Check valves of materials other than copper, iron or steel
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