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Safety Relief Valve NSN 4820-00-449-4657

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 4820-00-449-4657 NSN: 4820-00-449-4657

Features and Characteristics

Thread Class
2b all ends
Thread Direction
Right-hand all ends
Offset Distance
1.000 inches
Flow Control Device
Disk
Disk Loading Method
Spring
Connection Style
Gasket sea (boss) all ends
Valve Operation Method
Automatic
Connection Type
Threaded internal boss all ends
Mounting Facility
Bracket
Maximum Operating Pressure
500.0 pounds per square inch single response
Thread Size
0.750 inches all ends
Special Features
Furnished w/2 mounting bolts
Material
Steel flow control device
Style Designator
Tee w/offset
Thread Series Designator
Unf all ends
FSC
4820 Nonpowered Valves
NIIN
004494657
NSN
4820004494657

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
837156
Cage Code:
62983
Status:
A
MSDS:
Part Number:
L1-RM3-125-055-10
Cage Code:
62983
Status:
A
MSDS:
Part Number:
MX344017
Cage Code:
62983
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 4820-00-449-4657
What are the manufacturers of nsn 4820004494657?
Does this nsn 4820004494657 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820004494657
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 4820004494657 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820004494657 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820004494657?
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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