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Safety Relief Valve NSN 4820-01-020-4709

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 4820-01-020-4709 NSN: 4820-01-020-4709

  Stock Availability

NSN 4820010204709 availability
(as of 05/25/2021).

  • AR: 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

Pipe Size Accommodated
0.750 inches 2nd end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Bonnet Type
Inside spring
Bonnet Attachment Method
Integral
Disk Loading Method
Spring
Connection Style
G9 plain, optional en (pipe) 1st end
Valve Operation Method
Automatic or manual
Connection Type
Threaded internal pipe 1st end
Thread Size
0.750 inches 2nd end
Opening Pressure Setting
55.0 pounds per square inch
Material
Copper alloy body
Surface Treatment
Chromium
Style Designator
Err-090
Thread Series Designator
Npt 1st end
FSC
4820 Nonpowered Valves
NIIN
010204709
NSN
4820010204709

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
SERIES125
Cage Code:
93641
Status:
A
MSDS:
Part Number:
440173
Cage Code:
35550
Status:
A
MSDS:
Part Number:
10-322-P55
Cage Code:
72219
Status:
A
MSDS:
Part Number:
125-3/4-55-STEAM
Cage Code:
93641
Status:
A
MSDS:
Part Number:
10-301-50
Cage Code:
72219
Status:
A
MSDS:
Part Number:
10-301CHROME55PSI
Cage Code:
72219
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 4820-01-020-4709
What are the manufacturers of nsn 4820010204709?
Does this nsn 4820010204709 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820010204709
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 4820010204709 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820010204709 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820010204709?
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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