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Safety Relief Valve

Model / MPN: 20501-1 | NSN: 4820-00-094-8123
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
4820-00-094-8123
Sold in multiples of
DEMIL
DEMIL/MLI
Thread Class
3b all ends
Thread Direction
Right-hand all ends
Flow Control Device
Poppet
Disk Loading Method
Spring
Valve Discharge Flow Rate
3.0 gallons per minute
Connection Style
G4 gasket sea (boss) all ends
Connection Style
Gasket sea (boss) all ends
Valve Operation Method
Automatic
Connection Type
Threaded internal boss all ends
Mounting Facility
Threaded fastener
Features Provided
Pressure tight outlet side
Thready Qty Per Inch (tpi)
18 all ends
Adjustable Pressure Range
+300.0/+725.0 pounds per square inch
Adjustable Pressure Range
+300.0 to 725.0 pounds per square inch
Maximum Operating Pressure
725.0 pounds per square inch single response
Thread Size
0.562 inches all ends
Opening Pressure Setting
725.0 pounds per square inch
Media For Which Designed
Hydraulic fluid, phosphate-ester base single response
Test Data Document
00502-n20501 drawing (this is the basic governing drawing, such as a contractor drawing, original equipment manufacturer drawing, etc.; excludes any specification, standard or other document that may be referenced in a basic governing drawing)
Thread Series Designator
Unf all ends

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20501-1 Cross Reference