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- 3-420-4/3-420-M43 4IN
Model: 3-420-4/3-420-M43 4IN
Vent-check ValveProperties:
A dual purpose marine valve used primarily with shipboard cargo tanks and bulkheads. It acts both as a vent valve, to relieve vacuum and pressure, and a check valve, to prevent cargo contamination. It is equipped with an internal flame screen and/or a protective mesh and may include a hinged cover.
Part 3-420-4/3-420-M43 4IN NSN 4820-01-510-6208
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: 8481302090
- SITC: 74730
- End Use: Industrial machines, other
- NAICS: 332911
- USDA: 1
Freight Class: Check valves of steel
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