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Safety Relief Valve NSN 4820-01-442-8259

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 4820-01-442-8259 NSN: 4820-01-442-8259

Features and Characteristics

Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Bolted
Disk Loading Method
Spring
Bolt Hole Quantity
4 all ends
Maximum Operating Temp
45.0 degrees fahrenheit 2nd response
End Application
Wasp class lhd
Valve Operation Method
Automatic
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Valve Size
0.500 inches
Maximum Operating Pressure
285.0 pounds per square inch 1st response
Opening Pressure Setting
5.0 pounds per square inch
Outside Diameter
3.500 inches all ends
Thickness
0.438 inches all ends
First Connection Face To Centerline Distance
3.250 inches
Bolt Hole Diameter
0.625 inches all ends
Second Connection Face To Centerline Distance
3.250 inches
Bolt Circle Diameter
2.375 inches all ends
Flange Face Design
Raised straight all ends
Raised Face Height
0.062 inches all ends
Raised Face Diameter
1.375 inches all ends
Material
Stainless steel stem
Media For Which Designed
Water-oil-gas 2nd response
Style Designator
Err-090
FSC
4820 Nonpowered Valves
NIIN
014428259
NSN
4820014428259

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
2038101E0005
Cage Code:
15187
Status:
A
MSDS:
Part Number:
20381 ASSY 2038101E0005
Cage Code:
15187
Status:
A
MSDS:
Part Number:
20381
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 4820-01-442-8259
What are the manufacturers of nsn 4820014428259?
Does this nsn 4820014428259 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820014428259
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 4820014428259 contain any precious metals?
No precious metal content.
Does nsn 4820014428259 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820014428259?
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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  •   Quality Inspected Parts
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