Safety Relief Valve

Model / MPN: 537A4D20 | NSN: 4820-00-903-7241

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

4820-00-903-7241

Sold in multiples of

1 EA

DEMIL

Thread Class

3a 1st end

Thread Direction

Right-hand 1st end

Flow Control Device

Poppet

Disk Loading Method

Spring

Maximum Operating Temp

250.0 degrees fahrenheit single response

Connection Style

G50 external seat for gasket seal (boss) 1st end

Valve Operation Method

Automatic

Connection Type

Threaded external boss 1st end

Maximum Operating Pressure

200.0 pounds per square inch single response

Thread Size

0.437 inches 1st end

Opening Pressure Setting

20.0 pounds per square inch

Material

Aluminum alloy body

Material

Rubber butadiene-acrylonitrile class nbr flow control device

Media For Which Designed

Water-oil-gas single response

Thread Series Designator

Unf 1st end

537A Series Parts

Pricing and Availability

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537A4D20 Cross Reference

FTWC225-1