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NSN 4820-01-499-5988

Velocity Fuse

About this product

Dresser rand purchases this valve (pc 82) and spring (pc 81, p/n 407s-ws) from fulflo and assembles and sets cracking pressure at their factory. Dresser rand refused to specify cracking pressure setting. Similar item is 4820-01-259-8850 which uses the same spring and is set at 55 psi..

Manufacturer part number 77C for national stock number 4820014995988.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-01-499-5988.

  • MPN or Model

    77C

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Unit Weight (Est.)
    3.7 lb
  • Flow Control Device
    Piston
  • Bonnet Type
    Inside spring
  • Bonnet Attachment Method
    Threaded
  • Disk Loading Method
    Spring
  • End Application
    Centrifugal compressor
  • Connection Style
    G5a flar (tube) all ends
  • Valve Operation Method
    Automatic
  • Connection Type
    Threaded internal pipe all ends
  • Adjustable Pressure Range
    +30.0/+100.0 pounds per square inch
  • Maximum Operating Pressure
    100.0 pounds per square inch single response
  • Material
    Steel
  • Media For Which Designed
    Oil 1st response
  • Style Designator
    Err-090
More from these suppliers
Safety Relief Valve

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes valve (1), relief, pressure and temperature.

Mechanic Bill explains Velocity Fuse

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NSN 4820014995988

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
77C Dresser-rand Co
077C Dresser-rand Company
077C Dresser-rand Co
PL12498531 PC NO 82 Dresser-rand Company
PL12498531 PC NO 82 Dresser-rand Co
12498531 Dresser-rand Co
PL12498531 Dresser-rand Co
Stock Check
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