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NSN 4820-00-989-1891

Flow Switching Valve Block

About this product

Inside screw bonnet type, bolted bonnet attachment method, manual valve operation method, connection type: threaded internal pipe.

Manufacturer part number 37 for national stock number 4820009891891.

Datasheet

  • Product description

    Gate Valve NSN 4820-00-989-1891.

  • MPN or Model

    37

  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Bonnet Type
    Inside screw
  • Bonnet Attachment Method
    Bolted
  • Valve Operation Method
    Manual
  • Connection Type
    Threaded internal pipe
  • Features Provided
    Bonnet packing
  • Valve Size
    3.000 inches
  • Maximum Operating Pressure And Media For Which Designed
    200.0 pounds per square inch steam and 400.0 pounds per square inch water-oil-gas
  • Thread Size
    3.000 inches
  • Stem Type
    Rising
  • Maximum Operating Tempurature And Media For Which Designed
    550.0 degrees fahrenheit steam and 150.0 degrees fahrenheit water-oil-gas
  • Inlet Relationship With Outlet
    Identical
  • Pressure Class
    200.0 pounds
  • Material
    Copper alloy 922 body
  • Material Specification
    Astm b61 assn standard single material response body
  • Thread Series Designator
    Npt
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Gate Valve

A valve having a flat or tapered disk (gate) which moves transversely to the axis of flow by rotating or sliding movements of the stem to open or close the orifice. It may also contain an oval or rectangular shaped slide which may be manually, motor, or pressure operated through the means of an arm or arm assembly. The body flange may be designed to accommodate tube type connectors. It may or may not contain thermal relief features. Includes valve (gate) specifically designed for the control of fluid systems in aircraft or missiles.

Mechanic Bill explains Flow Switching Valve Block

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NSN 4820009891891

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
37 Walworth Co
37-3IN The Walworth Company
B-135-3IN Stockham Valves And Fittings Inc
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