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Safety Relief Valve NSN 4820-01-281-7371

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 4820-01-281-7371 NSN: 4820-01-281-7371

Features and Characteristics

Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Union
Disk Loading Method
Spring
Bolt Hole Quantity
4 1st end8 2nd end
Valve Operation Method
Automatic
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Valve Size
2.000 inches
Adjustable Pressure Range
+69.0/+80.0 pounds per square inch
Outside Diameter
7.500 inches 1st end6.500 inches 2nd end
Thickness
0.938 inches 1st end0.875 inches 2nd end
First Connection Face To Centerline Distance
4.938 inches
Bolt Hole Diameter
0.750 inches all ends
Second Connection Face To Centerline Distance
4.750 inches
Bolt Circle Diameter
6.000 inches 1st end5.000 inches 2nd end
Flange Face Design
Raised straight all ends
Raised Face Height
0.062 inches all ends
Raised Face Diameter
5.000 inches 1st end3.625 inches 2nd end
Material
Steel bodystainless steel flow control devicestainless steel seatstainless steel stem
Style Designator
Err-090
FSC
4820 Nonpowered Valves
NIIN
012817371
NSN
4820012817371

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
NMP-1563 S-50H 69-80PSI
Cage Code:
15187
Status:
A
MSDS:
Part Number:
NMP-1563 OPTION 1 69-80PSI
Cage Code:
15187
Status:
A
MSDS:
Part Number:
NMP-1563
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 4820-01-281-7371
What are the manufacturers of nsn 4820012817371?
Does this nsn 4820012817371 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820012817371
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 4820012817371 contain any precious metals?
No precious metal content.
Does nsn 4820012817371 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820012817371?
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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