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Safety Relief Valve NSN 4820-00-068-9973

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 4820-00-068-9973 NSN: 4820-00-068-9973

Features and Characteristics

Pipe Size Accommodated
0.375 inches 2nd end
Thread Class
2a 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Disk
Disk Loading Method
Spring
Valve Discharge Flow Rate
1500.0 pounds per hour
Connection Style
Plain (pipe) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded external tube 1st end
Features Provided
Valve stem lock shield and pressure tight outlet side
Thread Size
0.562 inches 1st end
Seat Angle
45.0 degrees 1st end
Opening Pressure Setting
285.0 pounds per square inch
Outside Diameter Tube Accommodated
0.375 inches 1st end
Special Features
Diaphram operated
Material
Copper alloy
Style Designator
Straight thru
Thread Series Designator
Unf 1st end
FSC
4820 Nonpowered Valves
NIIN
000689973
NSN
4820000689973

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
ASSYA3TYPE42
Cage Code:
32874
Status:
A
MSDS:
Part Number:
42ASSY5-8TDV3
Cage Code:
32874
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 4820-00-068-9973
What are the manufacturers of nsn 4820000689973?
Does this nsn 4820000689973 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820000689973
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 4820000689973 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820000689973 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820000689973?
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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