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Safety Relief Valve NSN 4820-01-478-0990

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 4820-01-478-0990 NSN: 4820-01-478-0990

Features and Characteristics

Thread Direction
Right-hand all ends
Flow Control Device
Poppet
Bonnet Type
Inside spring
Bonnet Attachment Method
Threaded
Disk Loading Method
Spring
Connection Style
G5a flar (tube) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded internal pipe 2nd end
Thready Qty Per Inch (tpi)
18 1st end
Adjustable Pressure Range
+3000.0/+4000.0 pounds per square inch
Thread Size
0.250 inches 2nd end
Opening Pressure Setting
3600.0 pounds per square inch
Material
Steel comp 316 body
Material Specification
Astma266, comp 316 assn standard all material responses body
Style Designator
Err-090
Thread Series Designator
Npt 1st end
FSC
4820 Nonpowered Valves
NIIN
014780990
NSN
4820014780990

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
4726-220-RVBA
Cage Code:
Z3287
Status:
A
MSDS:
Part Number:
SS-4R3A5-F
Cage Code:
18034
Status:
A
MSDS:
Part Number:
2200004
Cage Code:
Z4W93
Status:
A
MSDS:
Part Number:
515-856 3600 PSI
Cage Code:
28953
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 4820-01-478-0990
What are the manufacturers of nsn 4820014780990?
Does this nsn 4820014780990 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820014780990
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 4820014780990 contain any precious metals?
No precious metal content.
Does nsn 4820014780990 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820014780990?
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
  •   Quality Inspected Parts
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