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Safety Relief Valve

Model / MPN: 3127G 1/4IN. | NSN: 4820-01-273-0493
ITAR Registered seal

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.

Product Details
NATO Stock Number
Sold in multiples of
1 EA
Thread Direction
Right-hand all ends
Flow Control Device
Maximum Operating Temp
165.0 degrees fahrenheit single response
Connection Style
G46b plain (pipe) 1st end
Connection Style
G9 plain, optional en (pipe) 2nd end
Valve Operation Method
Connection Type
Threaded external pipe 1st end
Connection Type
Threaded internal pipe 2nd end
Thread Size
0.250 inches all ends
Opening Pressure Setting
250.0 pounds per square inch
Copper alloy body
Media For Which Designed
Air 1st response
Media For Which Designed
Hydrogen 2nd response
Media For Which Designed
Nitrogen, gaseous 3rd response
Media For Which Designed
Oxygen, gaseous 4th response
Thread Series Designator
Npt all ends
3127G Series Parts

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3127G 1/4IN. Cross Reference
  • 101809
  • 3127
  • 101809
  • 101809
  • 3127
  • 101809