Safety Relief Valve

Model / MPN: 250E | NSN: 4820-00-202-5522

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

4820-00-202-5522

Sold in multiples of

1 EA

DEMIL

Pipe Size Accommodated

1.000 inches 1st end

Pipe Size Accommodated

1.000 inches 2nd end

Thread Direction

Right-hand 2nd end

Thread Direction

Right-hand 1st end

Flow Control Device

Disk

Bonnet Type

Inside spring

Bonnet Attachment Method

Threaded

Disk Loading Method

Spring

Valve Discharge Flow Rate

387.0 pounds per hour

Connection Style

G46b plain (pipe) 2nd end

Connection Style

G9 plain, optional en (pipe) 1st end

Valve Operation Method

Automatic or manual

Connection Type

Threaded external pipe 2nd end

Connection Type

Threaded internal pipe 1st end

Features Provided

Pressure tight outlet side

Thread Size

1.000 inches 1st end

Thread Size

1.000 inches 2nd end

Opening Pressure Setting

40.0 pounds per square inch

Material

Copper alloy flow control device

Material

Copper alloy seat

Material

Copper alloy body

Material

Steel stem

Material Specification

Qq-c-390, alloyb5/d/ federal specification single material response bodyqq-c-390, alloyb5/d/ federal specification single material response flow control deviceqq-c-390, alloyb5/d/ federal specification single material response seat

Thread Series Designator

Npt 2nd end

Thread Series Designator

Npt 1st end

250E Series Parts

Pricing and Availability

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250E Cross Reference

SER 55-R0 W/1 IN
GV500UN1
TE-1
FIG2501