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Safety Relief Valve NSN 4820-01-256-8527

Item Description

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 4820-01-256-8527 NSN: 4820-01-256-8527

Features and Characteristics

Maximum Operating Pressure
6800.0 pounds per square inch single response
Criticality Code Justification
Feat
Special Features
Requires special cleaning and packaging iaw mil-c-52211, for oxygen/nitrogen/hydrogen service
Material
Nickel alloy 400 body or nickel alloy r-405 body
Material Specification
Qq-n-281, class a federal specification 1st material response body or qq-n-281 class b federal specification 2nd material response body
Media For Which Designed
Oxygen, gaseous single response
Style Designator
Err-090
FSC
4820 Nonpowered Valves
NIIN
012568527
NSN
4820012568527

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
203579940M
Cage Code:
15187
Status:
A
MSDS:
Part Number:
203579940MCP
Cage Code:
03950
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8481400000
  • NAICS: 332911
  • SITC: 74740
  • Description: Safety or relief valves
  • End Use (Code 21180):
    Industrial machines, other

Q & A

Frequently asked questions for NSN 4820-01-256-8527
What are the manufacturers of nsn 4820012568527?
Does this nsn 4820012568527 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820012568527
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.
Does nsn 4820012568527 contain any precious metals?
No precious metal content.
Does nsn 4820012568527 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820012568527?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
05488
FIIG:
A046B0
App. Key:
AP
Cond. Code:
1
Status:
A

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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
  •   Quality Fast Service
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