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Safety Relief Valve NSN 4820-00-289-3781

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 4820-00-289-3781 NSN: 4820-00-289-3781

Features and Characteristics

Pipe Size Accommodated
0.500 inches 1st end
Disk Loading Method
Spring
Renewable Seat Ring Type
Threaded
Maximum Operating Temp
425.0 degrees fahrenheit single response
Connection Style
Swivel nut, gasket sea (tube) all ends
Valve Operation Method
Automatic
Connection Type
Unthreaded internal pipe 1st end
Adjustable Pressure Range
+51.0/+70.0 pounds per square inch
Maximum Operating Pressure
100.0 pounds per square inch single response
Special Features
W/lifting lever
Material
Nickel alloy stem
Media For Which Designed
Water, salt single response
Style Designator
Angle
FSC
4820 Nonpowered Valves
NIIN
002893781
NSN
4820002893781

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
NMP0603H11S0051
Cage Code:
15187
Status:
A
MSDS:
Part Number:
NMP-603-51T70PSI
Cage Code:
75954
Status:
A
MSDS:
Part Number:
NMP-603 OPT A, B43A
Cage Code:
15187
Status:
A
MSDS:
Part Number:
L-2110-C .50IPS 51T70PSI
Cage Code:
75954
Status:
A
MSDS:
Part Number:
NMP-603 OPT.A B
Cage Code:
01343
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 4820-00-289-3781
What are the manufacturers of nsn 4820002893781?
Does this nsn 4820002893781 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820002893781
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 4820002893781 contain any precious metals?
No precious metal content.
Does nsn 4820002893781 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820002893781?
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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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
  •   Quality Fast Service
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