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Safety Relief Valve NSN 4820-01-220-5575

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 4820-01-220-5575 NSN: 4820-01-220-5575

Features and Characteristics

Flow Control Device
Disk
Bonnet Type
Inside screw
Bonnet Attachment Method
Bolted
Bolt Hole Quantity
8 all ends
Valve Operation Method
Automatic
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Valve Size
4.000 inches
Opening Pressure Setting
300.0 pounds per square inch
Outside Diameter
9.000 inches 2nd end
Thickness
0.812 inches 1st end
First Connection Face To Centerline Distance
6.250 inches
Bolt Hole Diameter
0.875 inches 1st end
Second Connection Face To Centerline Distance
6.250 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
Steel comp 303 stem
Style Designator
C1a angle flanged ends
FSC
4820 Nonpowered Valves
NIIN
012205575
NSN
4820012205575

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
S1384 4IN90T140
Cage Code:
35795
Status:
A
MSDS:
Part Number:
C3339 4IN90T140PSI PL4198
Cage Code:
35795
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 4820-01-220-5575
What are the manufacturers of nsn 4820012205575?
Does this nsn 4820012205575 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820012205575
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 4820012205575 contain any precious metals?
No precious metal content.
Does nsn 4820012205575 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820012205575?
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
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