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Safety Relief Valve NSN 4820-01-321-7248

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 4820-01-321-7248 NSN: 4820-01-321-7248

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Features and Characteristics

Disk Loading Method
Spring
Valve Discharge Flow Rate
9451.0 cubic feet per minute
Bolt Hole Quantity
4 2nd end
Valve Operation Method
Automatic
Flange Shape
Round 1st end
Connection Type
Flange 1st end
Opening Pressure Setting
810.0 pounds per square inch
First Connection Face To Centerline Distance
4.469 inches
Bolt Hole Diameter
0.438 inches 2nd end
Second Connection Face To Centerline Distance
4.188 inches
Bolt Circle Diameter
5.375 inches 2nd end
Flange Face Design
Raised straight 2nd end
Material
Stainless steel flow control device
Material Specification
Asme sa479, type 316 assn standard 1st material response flow control device and astm a276, type 440c gr 100 assn standard 2nd material response flow control device
Media For Which Designed
Air single response
Style Designator
Err-090
FSC
4820 Nonpowered Valves
NIIN
013217248
NSN
4820013217248

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
9431-02-5800-496
Cage Code:
88773
Status:
A
MSDS:
Part Number:
9431-20-0000-500 PIECE 6
Cage Code:
88773
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 4820-01-321-7248
What are the manufacturers of nsn 4820013217248?
Does this nsn 4820013217248 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820013217248
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 4820013217248 contain any precious metals?
No precious metal content.
Does nsn 4820013217248 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820013217248?
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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