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NSN 4820-01-163-0189

Relief Valve

About this product

Steel, qq-s-763, class 303 seat material, 1 end connections, not adjustable tempurature adjustability, .

Manufacturer part number 621990-1 for national stock number 4820011630189.

Datasheet

  • Product description

    Pressure And Temperature Relief Valve NSN 4820-01-163-0189.

  • MPN or Model

    621990-1

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Seat Material
    Steel, qq-s-763, class 303
  • End Connection Quantity
    1
  • Tempurature Adjustability
    Not adjustable
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Pressure And Temperature Relief Valve

A valve designed to release under excessive pressure and/or excessive temperature by opening at a predetermined pressure and/or temperature. Thermostatically operated valves close when the pressure is relieved or the temperature is reduced. Fusible plug valves require replacement of the plug. See also valve, safety relief and valve, regulating. Temperature.

Mechanic Bill explains Relief Valve

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NSN 4820011630189

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
621990-1 Naval Air Warfare Center Aircraft
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