Safety Relief Valve

Model / MPN: 520A-4D-200 | NSN: 4820-01-169-1592

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

4820-01-169-1592

Sold in multiples of

1 EA

DEMIL

Thread Class

3a 1st end

Thread Direction

Right-hand 1st end

Flow Control Device

Poppet

Maximum Operating Temp

-100.0 degrees fahrenheit 1st response500.0 degrees fahrenheit 2nd response

Connection Style

G46a plain (tube) 1st end

Valve Operation Method

Automatic

Connection Type

Threaded external tube 1st end

Maximum Operating Pressure

200.0 pounds per square inch single response

Thread Size

0.4375 inches 1st end

Opening Pressure Setting

200.0 pounds per square inch

Material

Aluminum alloy 2024 body

Material Specification

Qq-a-225/6, t4 federal specification single material response body

Thread Series Designator

Unjf 1st end

520A Series Parts

Pricing and Availability

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520A-4D-200 Cross Reference

2526882