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Safety Relief Valve

NSN: 4820-00-078-8557 | Model: 1543F-1SET40

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.

NSN Properties and Flags
NATO Stock Number
4820-00-078-8557
DEMIL
NO

Inventory Check

The last inventory check on this NSN was done on 06/02/2021. Due to rapid changes in inventory this may not be the current stock qty.

  • New: 1
  • New Surplus: 1

Pricing and Availability

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NSN 4820-00-078-8557 Datasheet

Supply Class (FSC):
Nonpowered Valves
Cross Reference:
  • 1543F-1SET40
  • 1451-1SET40
  • 1451-1SET40
  • 1451-1SET40
Cage Codes:
  • Dresser, Inc. (CAGE 16497)
Schedule B & Trade:
  • Schedule B: 8481400000 (NAICS 332911)

    Safety or relief valves

  • SITC: 74740

    Safety or relief valves

  • End Use: 21180

    Industrial machines, other

Identification:
HMIC

N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

PMIC

U - Precious metal content is unknown

Questions & Answers:

What are the historical prices recorded for this stock number?
No pre-dated pricing for this NSN could be found.
Does NSN 4820-00-078-8557 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
National Aeronautics and Space Administration
What is the NIIN of NSN 4820-00-078-8557?
000788557 or 00-078-8557
Does NSN 4820-00-078-8557 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 4820-00-078-8557?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Aug 05, 1967