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Safety Relief Valve NSN 4820-01-439-6366

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 4820-01-439-6366 NSN: 4820-01-439-6366

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Features and Characteristics

Flow Control Device
Disk
Bonnet Type
Inside screw
Bonnet Attachment Method
Bolted
Disk Loading Method
Spring
Bolt Hole Quantity
8 2nd end
End Application
Usns stalwart class tagos
Valve Operation Method
Automatic
Flange Shape
Round with holes 2nd end
Connection Type
Flange 1st end
Mounting Facility
Bracket
Valve Size
4.000 inches
Maximum Operating Pressure
400.0 pounds per square inch single response
Opening Pressure Setting
30.0 pounds per square inch
Outside Diameter
9.000 inches 2nd end
Thickness
1.250 inches 1st end
Bolt Hole Diameter
0.875 inches 1st end
Bolt Circle Diameter
7.500 inches 2nd end
Flange Face Design
Plain 2nd end
Raised Face Height
0.062 inches 1st end
Raised Face Diameter
6.937 inches 1st end
Special Features
Model 091k-m
Material
Steel stem or copper alloy stem
Media For Which Designed
Oil, lubricating, diester base single response
Style Designator
Err-090
FSC
4820 Nonpowered Valves
NIIN
014396366
NSN
4820014396366

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
9549384
Cage Code:
72915
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 4820-01-439-6366
What are the manufacturers of nsn 4820014396366?
Does this nsn 4820014396366 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820014396366
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 4820014396366 contain any precious metals?
No precious metal content.
Does nsn 4820014396366 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820014396366?
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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