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Safety Relief Valve NSN 4820-01-237-1721

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 4820-01-237-1721 NSN: 4820-01-237-1721

Features and Characteristics

Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Union
Disk Loading Method
Spring
Bolt Hole Quantity
8 all ends
Maximum Operating Temp
750.0 degrees fahrenheit single response
Valve Operation Method
Automatic
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Valve Size
6.000 inches
Adjustable Pressure Range
+7.0/+10.0 pounds per square inch
Maximum Operating Pressure
95.0 pounds per square inch single response
Outside Diameter
9.000 inches 2nd end
Thickness
1.000 inches 1st end
First Connection Face To Centerline Distance
7.375 inches
Bolt Hole Diameter
0.750 inches 1st end
Second Connection Face To Centerline Distance
7.375 inches
Bolt Circle Diameter
9.500 inches 1st end
Flange Face Design
Raised straight all ends
Raised Face Height
0.062 inches all ends
Raised Face Diameter
8.500 inches 1st end
Material
Stainless steel stem
Media For Which Designed
Air 1st response
Style Designator
Err-090
FSC
4820 Nonpowered Valves
NIIN
012371721
NSN
4820012371721

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
V118-NMP865DASH
Cage Code:
75954
Status:
A
MSDS:
Part Number:
NMP865-2V118-7T10PSI
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 4820-01-237-1721
What are the manufacturers of nsn 4820012371721?
Does this nsn 4820012371721 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820012371721
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 4820012371721 contain any precious metals?
No precious metal content.
Does nsn 4820012371721 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820012371721?
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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