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NSN 4820-00-204-1955

Lift-check Valve

About this product

Disk flow control device, inside screw bonnet type, integral bonnet attachment method, disk loading method: spring.

Manufacturer part number 1-1254-1-2 for national stock number 4820002041955.

Datasheet

  • Product description

    Lift-check Valve NSN 4820-00-204-1955.

  • MPN or Model

    1-1254-1-2

  • Schedule B
    8481.30.9000 (Check valves of materials other than copper, iron or steel)
  • NMF (National Motor Freight)
    051080 - Faucets, Bibcocks, Gates Valves
  • Thread Class
    3b all ends
  • Thread Direction
    Right-hand all ends
  • Flow Control Device
    Disk
  • Bonnet Type
    Inside screw
  • Bonnet Attachment Method
    Integral
  • Disk Loading Method
    Spring
  • Maximum Operating Temp
    160.0 degrees fahrenheit single response
  • Connection Style
    Gasket seal (boss) all ends
  • Valve Operation Method
    Manual
  • Connection Type
    Threaded internal boss all ends
  • Mounting Facility
    Threaded fastener
  • Mounting Position
    Horizontal or vertical
  • Maximum Operating Pressure
    3000.0 pounds per square inch single response
  • Thread Size
    0.750 inches all ends
  • Outside Diameter Tube Accommodated
    0.500 inches all ends
  • Material
    Steel flow control device
  • Media For Which Designed
    Hydraulic fluid, phosphate-ester base single response
  • Style Designator
    Straight thru
  • Supplementary Features
    Optional flow control device: stem
  • Thread Series Designator
    Unf all ends
More from these suppliers
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 4820002041955

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
1-1254-1-2 Parker Hannifin Corporation
668101-4 Lockheed Martin Corporation
668101-1 Lockheed Martin Corporation
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