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Safety Relief Valve NSN 4820-01-025-6844

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 4820-01-025-6844 NSN: 4820-01-025-6844

  Stock Availability

NSN 4820010256844 availability
(as of 07/12/2024).

  • NE: 1
  • NS: 1

Note: Availability of this item may have changed since it was last checked. Request a quote for an updated price and availability quote.

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Features and Characteristics

Thread Class
3a all ends
Thread Direction
Right-hand all ends
Flow Control Device
Disk
Maximum Operating Temp
280.0 degrees fahrenheit single response
Connection Style
G46a plain (tube) all ends
Valve Operation Method
Automatic
Connection Type
Threaded external tube all ends
Thready Qty Per Inch (tpi)
18 all ends
Adjustable Pressure Range
+0.5/+2.4 pounds per square inch
Maximum Operating Pressure
150.0 pounds per square inch single response
Thread Size
0.562 inches all ends
Material
Rubber butadiene-acrylonitrile class nbr packing
Media For Which Designed
Air 1st response
Surface Treatment
Anodize
Style Designator
Err-090
Thread Series Designator
Unj all ends
FSC
4820 Nonpowered Valves
NIIN
010256844
NSN
4820010256844

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
3978-4SET20
Cage Code:
22501
Status:
A
MSDS:
Part Number:
3978-4
Cage Code:
22501
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 4820-01-025-6844
What are the manufacturers of nsn 4820010256844?
Does this nsn 4820010256844 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820010256844
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 4820010256844 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820010256844 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820010256844?
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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