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Safety Relief Valve NSN 4820-00-451-0646

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 4820-00-451-0646 NSN: 4820-00-451-0646

Features and Characteristics

Thread Class
3b all ends
Thread Direction
Right-hand all ends
Flow Control Device
Poppet
Bonnet Type
Inside spring
Bonnet Attachment Method
Threaded
Disk Loading Method
Spring
Maximum Operating Temp
180.0 degrees fahrenheit single response
Connection Style
Gasket sea (boss) all ends
Valve Operation Method
Automatic
Connection Type
Threaded internal boss all ends
Features Provided
Bonnet packing and pressure tight outlet side
Adjustable Pressure Range
+115.0/+250.0 pounds per square inch
Maximum Operating Pressure
3100.0 pounds per square inch single response
Thread Size
0.437 inches all ends
Opening Pressure Setting
200.0 pounds per square inch
Outside Diameter Tube Accommodated
0.250 inches all ends
Material
Aluminum alloy
Media For Which Designed
Oil, hydraulic 2nd response
Surface Treatment
Anodize
Style Designator
Angle
Thread Series Designator
Unjf all ends
FSC
4820 Nonpowered Valves
NIIN
004510646
NSN
4820004510646

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
625B-4-4-27
Cage Code:
09990
Status:
A
MSDS:
Part Number:
625B4-4-27
Cage Code:
86768
Status:
A
MSDS:
Part Number:
625B4-4-3
Cage Code:
86768
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 4820-00-451-0646
What are the manufacturers of nsn 4820004510646?
Does this nsn 4820004510646 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820004510646
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 4820004510646 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820004510646 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820004510646?
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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