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Safety Relief Valve NSN 4820-01-191-8291

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 4820-01-191-8291 NSN: 4820-01-191-8291

Features and Characteristics

Flow Control Device
Disk
Bolt Hole Quantity
3 all ends
Maximum Operating Temp
150.0 degrees fahrenheit single response
Valve Operation Method
Automatic
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Valve Size
0.500 inches
Adjustable Pressure Range
+30.0/+34.0 pounds per square inch
Maximum Operating Pressure
150.0 pounds per square inch single response
Outside Diameter
3.562 inches all ends
Thickness
0.375 inches all ends
First Connection Face To Centerline Distance
3.000 inches
Bolt Hole Diameter
0.562 inches all ends
Second Connection Face To Centerline Distance
3.000 inches
Bolt Circle Diameter
2.438 inches all ends
Flange Face Design
Plain all ends
Material
Nickel alloy flow control device
Media For Which Designed
Water-oil-gas single response
Style Designator
Err-090
FSC
4820 Nonpowered Valves
NIIN
011918291
NSN
4820011918291

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
20221FS41M
Cage Code:
15187
Status:
A
MSDS:
Part Number:
E8551F41M
Cage Code:
15187
Status:
A
MSDS:
Part Number:
D50FF-04-1/2 IN
Cage Code:
5P967
Status:
A
MSDS:
Part Number:
20221
Cage Code:
01343
Status:
A
MSDS:
Part Number:
20221FSF41M
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 4820-01-191-8291
What are the manufacturers of nsn 4820011918291?
Does this nsn 4820011918291 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820011918291
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 4820011918291 contain any precious metals?
No precious metal content.
Does nsn 4820011918291 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820011918291?
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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  •   Certificate of Conformance
  •   Quality Inspected Parts
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