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NSN 4820-01-423-2028

Lift-check Valve

About this product

Inside spring bonnet type, bolted bonnet attachment method, 14 all ends bolt holes, valve operation method: automatic.

Manufacturer part number 803-6983468-ASSY 90 for national stock number 4820014232028.

Datasheet

  • Product description

    Lift-check Valve NSN 4820-01-423-2028.

  • MPN or Model

    803-6983468-ASSY 90

  • Schedule B
    8481.30.9000 (Check valves of materials other than copper, iron or steel)
  • NMF (National Motor Freight)
    051080 - Faucets, Bibcocks, Gates Valves
  • Bonnet Type
    Inside spring
  • Bonnet Attachment Method
    Bolted
  • Bolt Hole Quantity
    14 all ends
  • Maximum Operating Temp
    250.0 degrees fahrenheit single response
  • End Application
    Navy weapon system code le fire fighting equipment
  • Valve Operation Method
    Automatic
  • Flange Shape
    Round with holes all ends
  • Connection Type
    Flange all ends
  • Mounting Position
    Horizontal
  • Valve Size
    8.000 inches
  • Maximum Operating Pressure
    250.0 pounds per square inch single response
  • Outside Diameter
    12.375 inches all ends
  • Face To Face Distance
    25.750 inches
  • Thickness
    1.310 inches all ends
  • Bolt Hole Diameter
    0.694 inches all ends
  • Bolt Circle Diameter
    11.060 inches all ends
  • Flange Face Design
    Plain all ends
  • Material
    Nickel alloy body
  • Media For Which Designed
    Water, salt single response
  • Style Designator
    Straight through flanged ends
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Lift-check Valve

A valve with a stem that may be mechanically actuated to two different positions by rotary or linear motion. In the first position, one side of the valve disk is located against the seat permitting movement of the disk in a manner that will allow a flow of fluid in one direction through the valve. In the second position, the valve disk is lifted from the seat to allow a flow of fluid in either direction through the valve. The valve disk may be spring loaded. See also valve, stop-check and valve, stop-lift-check.

Mechanic Bill explains Lift-check Valve

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NSN 4820014232028

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
803-6983468-ASSY 90 Naval Sea Systems Command
6983468 Naval Sea Systems Command
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