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Safety Relief Valve NSN 4820-01-068-2981

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 4820-01-068-2981 NSN: 4820-01-068-2981

Features and Characteristics

Pipe Size Accommodated
0.250 inches all ends
Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Threaded
Disk Loading Method
Spring
Maximum Operating Temp
150.0 degrees fahrenheit single response
End Application
Sturgeon class ss (637)
Connection Style
Socket with brazing ring err-100
Valve Operation Method
Automatic
Connection Type
Unthreaded internal pipe all ends
Features Provided
Pressure tight outlet side
Adjustable Pressure Range
+76.0/+105.0 pounds per square inch
Maximum Operating Pressure
440.0 pounds per square inch single response
Material
Steel comp 303 stem
Material Specification
Qq-n-281 federal specification single material response flow control device
Media For Which Designed
Water-oil-gas single response
Style Designator
Err-090
FSC
4820 Nonpowered Valves
NIIN
010682981
NSN
4820010682981

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
9663-20CS169-76
Cage Code:
01343
Status:
A
MSDS:
Part Number:
20CS169-1-4-76T105
Cage Code:
15187
Status:
A
MSDS:
Part Number:
D40HUU-06 1/4 IN
Cage Code:
5P967
Status:
A
MSDS:
Part Number:
9663-76T0105PSI
Cage Code:
15187
Status:
A
MSDS:
Part Number:
9663
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 4820-01-068-2981
What are the manufacturers of nsn 4820010682981?
Does this nsn 4820010682981 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820010682981
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 4820010682981 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820010682981 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820010682981?
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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  •   Certificate of Conformance
  •   Quality Inspected Parts
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