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Safety Relief Valve NSN 4820-00-071-4840

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 4820-00-071-4840 NSN: 4820-00-071-4840

Features and Characteristics

Flow Control Device
Disk
Bonnet Type
Exposed spring
Bonnet Attachment Method
Bolted
Disk Loading Method
Spring
Valve Discharge Flow Rate
6485.0 cubic feet per minute
Bolt Hole Quantity
8 1st end
Valve Operation Method
Automatic
Flange Shape
Round with holes 2nd end
Connection Type
Flange 1st end
Features Provided
Pressure tight outlet side
Maximum Operating Pressure
600.0 pounds per square inch single response
Opening Pressure Setting
595.0 pounds per square inch
Outside Diameter
7.000 inches 2nd end
Bolt Hole Diameter
0.750 inches 2nd end
Bolt Circle Diameter
5.500 inches 2nd end
Flange Face Design
Plain 2nd end
Raised Face Height
0.250 inches 1st end
Raised Face Diameter
3.500 inches 1st end
Special Features
1st connection face to center line distance 5.500 in. 2nd connection face to centerline distance 5.000
Material
Steel
Style Designator
Angle
FSC
4820 Nonpowered Valves
NIIN
000714840
NSN
4820000714840

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
72
Cage Code:
01343
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 4820-00-071-4840
What are the manufacturers of nsn 4820000714840?
Does this nsn 4820000714840 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820000714840
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 4820000714840 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820000714840 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820000714840?
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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