Safety Relief Valve

Model / MPN: 20318 ASSY 20318 | NSN: 4820-01-363-2100

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

4820-01-363-2100

Sold in multiples of

1 EA

DEMIL

Flow Control Device

Disk

Bolt Hole Quantity

6 all ends

Maximum Operating Temp

425.0 degrees fahrenheit 1st response150.0 degrees fahrenheit 2nd response

Valve Operation Method

Automatic

Flange Shape

Round with holes all ends

Connection Type

Flange all ends

Valve Size

1.500 inches

Maximum Operating Pressure

150.0 pounds per square inch 1st response250.0 pounds per square inch 2nd response

Outside Diameter

5.062 inches all ends

Thickness

0.812 inches all ends

First Connection Face To Centerline Distance

4.750 inches

Bolt Hole Diameter

0.562 inches all ends

Second Connection Face To Centerline Distance

4.750 inches

Bolt Circle Diameter

3.938 inches all ends

Flange Face Design

Plain all ends

Material

Copper alloy bodynickel alloy flow control devicenickel alloy seatnickel alloy stem

Media For Which Designed

Steam 1st responsewater-oil-gas 2nd response

20318 Series Parts

Pricing and Availability

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ISO 9001:2015 + AS9120B
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20318 ASSY 20318 Cross Reference

20318QS41M
20318
20318 ASSY 20318QS41M
20318QS41M