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Safety Relief Valve NSN 4820-01-477-9754

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 4820-01-477-9754 NSN: 4820-01-477-9754

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Features and Characteristics

Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Bolted
Disk Loading Method
Spring
Renewable Seat Ring Type
Pressed-in
Maximum Operating Temp
165.0 degrees fahrenheit single response
Connection Style
G46a plain (tube) all ends
Valve Operation Method
Automatic
Connection Type
Threaded external pipe all ends
Maximum Operating Pressure
400.0 pounds per square inch single response
Opening Pressure Setting
100.0 pounds per square inch
Part Name Assigned By Controlling Agency
1/2" relief valve typ 1551-t
Special Features
Spring material is stainless steel; vent must be open to atmosphere or piped to downstream piping
Material
Nickel alloy r-405 stem
Material Specification
Qq-n-281 or astm b164 federal specification single material response stem
Style Designator
Err-090
Furnished Items And Quantity
1 cap and 1 locking device
FSC
4820 Nonpowered Valves
NIIN
014779754
NSN
4820014779754

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
SW133B01E0100/CDS17052
Cage Code:
15187
Status:
A
MSDS:
Part Number:
SW133B01E0100
Cage Code:
15187
Status:
A
MSDS:
Part Number:
SW133
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 4820-01-477-9754
What are the manufacturers of nsn 4820014779754?
Does this nsn 4820014779754 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820014779754
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 4820014779754 contain any precious metals?
No precious metal content.
Does nsn 4820014779754 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820014779754?
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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