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Safety Relief Valve NSN 4820-01-425-1421

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 4820-01-425-1421 NSN: 4820-01-425-1421

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Features and Characteristics

Disk Loading Method
Spring
Bolt Hole Quantity
8 1st end
Flange Shape
Round with holes 2nd end
Connection Type
Flange 1st end
Outside Diameter
11.500 inches 1st end
First Connection Face To Centerline Distance
8.750 inches
Bolt Hole Diameter
1.250 inches 1st end
Second Connection Face To Centerline Distance
7.750 inches
Bolt Circle Diameter
9.250 inches 1st end
Flange Face Design
Raised straight 2nd end
Material
Steel flow control device
Material Specification
Astm a564 assn standard single material response stem
Style Designator
Err-090
FSC
4820 Nonpowered Valves
NIIN
014251421
NSN
4820014251421

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
6350-J43
Cage Code:
62654
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 4820-01-425-1421
What are the manufacturers of nsn 4820014251421?
Does this nsn 4820014251421 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820014251421
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 4820014251421 contain any precious metals?
No precious metal content.
Does nsn 4820014251421 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820014251421?
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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