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Safety Relief Valve NSN 4820-00-604-4971

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 4820-00-604-4971 NSN: 4820-00-604-4971

Features and Characteristics

Pipe Size Accommodated
1.000 inches 1st end
Thread Direction
Right-hand all ends
Flow Control Device
Piston
Disk Loading Method
Spring
Connection Style
Plain (pipe) all ends
Valve Operation Method
Automatic
Connection Type
Threaded external pipe all ends
Thread Size
1.000 inches all ends
Opening Pressure Setting
300.0 pounds per square inch
Special Features
Maritime model with monel valve trim, used with ammonia, corrosive, refrigerants
Material
Steel body
Style Designator
Angle
Thread Series Designator
Npt all ends
FSC
4820 Nonpowered Valves
NIIN
006044971
NSN
4820006044971

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
022-02097-000
Cage Code:
66935
Status:
A
MSDS:
Part Number:
022-02097
Cage Code:
66935
Status:
A
MSDS:
Part Number:
22-1146
Cage Code:
66935
Status:
A
MSDS:
Part Number:
464686 PIECE 75
Cage Code:
66935
Status:
A
MSDS:
Part Number:
464686
Cage Code:
87365
Status:
A
MSDS:
Part Number:
B566S-290
Cage Code:
28193
Status:
A
MSDS:
Part Number:
365-24237PC49
Cage Code:
66935
Status:
A
MSDS:
Part Number:
B566S300
Cage Code:
28193
Status:
A
MSDS:
Part Number:
22-1146P
Cage Code:
66935
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 4820-00-604-4971
What are the manufacturers of nsn 4820006044971?
Does this nsn 4820006044971 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820006044971
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 4820006044971 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820006044971 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820006044971?
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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