Model: B4021
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 B4021 NSN 4820-00-289-0658
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: 8481301010
- SITC: 74730
- End Use: Industrial machines, other
- NAICS: 332911
- USDA: 1
Freight Class: Check valves of copper having a pressure rating under 850 kpa
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