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Safety Relief Valve NSN 4820-01-220-0839

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 4820-01-220-0839 NSN: 4820-01-220-0839

Features and Characteristics

Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Union
Disk Loading Method
Spring
Valve Operation Method
Automatic
Connection Type
Flange all ends
Adjustable Pressure Range
+459.0 to 557.0 pounds per square inch
Maximum Operating Pressure
1200.0 pounds per square inch single response
Flange Face Design
Raised straight all ends
Material
Stainless steel stem
Media For Which Designed
Air 1st response
Style Designator
C1a angle flanged ends
FSC
4820 Nonpowered Valves
NIIN
012200839
NSN
4820012200839

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
NMP314RNG459 TO 557PSI-A
Cage Code:
15187
Status:
A
MSDS:
Part Number:
NMP355 RANGE 459 TO 557 1IN
Cage Code:
01343
Status:
A
MSDS:
Part Number:
NMP355-L3120A 1IN 459 T 557 PSI
Cage Code:
01343
Status:
A
MSDS:
Part Number:
S4824-H-31293398RNG459 TO 557
Cage Code:
80064
Status:
A
MSDS:
Part Number:
NMP314
Cage Code:
75954
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 4820-01-220-0839
What are the manufacturers of nsn 4820012200839?
Does this nsn 4820012200839 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820012200839
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 4820012200839 contain any precious metals?
No precious metal content.
Does nsn 4820012200839 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820012200839?
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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