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Safety Relief Valve NSN 4820-01-294-3131

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 4820-01-294-3131 NSN: 4820-01-294-3131

Features and Characteristics

Flow Control Device
Disk
Bonnet Type
Inside screw
Bonnet Attachment Method
Bolted
Bolt Hole Quantity
4 all ends
Valve Operation Method
Automatic
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Valve Size
0.500 inches
Adjustable Pressure Range
+65.0/+84.0 pounds per square inch
Outside Diameter
4.250 inches 1st end
Thickness
0.562 inches 2nd end
First Connection Face To Centerline Distance
3.374 inches
Bolt Hole Diameter
0.625 inches all ends
Second Connection Face To Centerline Distance
3.312 inches
Bolt Circle Diameter
3.125 inches 1st end
Flange Face Design
Raised straight all ends
Raised Face Height
0.250 inches 2nd end
Raised Face Diameter
2.000 inches 1st end
Material
Steel comp 630 flow control device and steel comp 440a flow control device
Style Designator
Err-090
FSC
4820 Nonpowered Valves
NIIN
012943131
NSN
4820012943131

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
D-30C NMP-1531OPTB 65T84PSI
Cage Code:
15187
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 4820-01-294-3131
What are the manufacturers of nsn 4820012943131?
Does this nsn 4820012943131 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820012943131
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 4820012943131 contain any precious metals?
No precious metal content.
Does nsn 4820012943131 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820012943131?
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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