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Safety Relief Valve NSN 4820-00-431-6157

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 4820-00-431-6157 NSN: 4820-00-431-6157

Features and Characteristics

Flow Control Device
Disk
Bonnet Type
Exposed spring
Bonnet Attachment Method
Bolted
Disk Loading Method
Spring
Renewable Seat Ring Type
Threaded
Valve Operation Method
Automatic
Flange Shape
Round 1st end
Connection Type
Flange 1st end
Features Provided
Pressure tight outlet side
Adjustable Pressure Range
+156.0/+180.0 pounds per square inch
Criticality Code Justification
Zzzy
Flange Face Design
Plain 1st end
Material
Plastic polytetrafluoroethylene seat and nickel alloy 400 seat
Style Designator
Angle
Reference Number Differentiating Characteristics
Material will be in accordance with ships parts control center activity hx quality control, manufacturing and testing specifications
FSC
4820 Nonpowered Valves
NIIN
004316157
NSN
4820004316157

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
20174RS41M
Cage Code:
01343
Status:
A
MSDS:
Part Number:
20174
Cage Code:
01343
Status:
A
MSDS:
Part Number:
2017ASSYRS41M
Cage Code:
01343
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 4820-00-431-6157
What are the manufacturers of nsn 4820004316157?
Does this nsn 4820004316157 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820004316157
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 4820004316157 contain any precious metals?
No precious metal content.
Does nsn 4820004316157 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820004316157?
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
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