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Safety Relief Valve NSN 4820-01-218-3304

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 4820-01-218-3304 NSN: 4820-01-218-3304

Features and Characteristics

Thread Class
3b 2nd end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Maximum Operating Temp
275.0 degrees fahrenheit 2nd response
Connection Style
G4 gasket sea (boss) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded internal boss 2nd end
Maximum Operating Pressure
2500.0 pounds per square inch single response
Thread Size
0.750 inches 2nd end
Seat Angle
37.0 degrees 1st end
Opening Pressure Setting
350.0 pounds per square inch
Outside Diameter Tube Accommodated
0.500 inches 1st end
Material
Stainless steel body
Media For Which Designed
Ammonia, liquid 4th response
Style Designator
C8 straight through note: to be used for valve bodies of one section only.
Thread Series Designator
Unjf 1st end
FSC
4820 Nonpowered Valves
NIIN
012183304
NSN
4820012183304

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
5177T-8TB-400
Cage Code:
91816
Status:
A
MSDS:
Part Number:
5177T-8TB-350
Cage Code:
91816
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 4820-01-218-3304
What are the manufacturers of nsn 4820012183304?
Does this nsn 4820012183304 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820012183304
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 4820012183304 contain any precious metals?
No precious metal content.
Does nsn 4820012183304 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820012183304?
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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