Safety Relief Valve

Model / MPN: 16649-18 | NSN: 4820-00-342-4799

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

4820-00-342-4799

Sold in multiples of

1 EA

DEMIL

DEMIL/MLI

Thread Direction

Right-hand 1st end

Flow Control Device

Disk

Disk Loading Method

Spring

Valve Discharge Flow Rate

0.9 cubic feet per minute

Maximum Operating Temp

-70.0 degrees fahrenheit 1st response

Maximum Operating Temp

450.0 degrees fahrenheit 2nd response

Connection Style

G46b plain (pipe) 1st end

Connection Style

Plain (pipe) 1st end

Valve Operation Method

Automatic

Connection Type

Threaded external pipe 1st end

Maximum Operating Pressure

30.0 pounds per square inch 1st response

Thread Size

0.125 inches 1st end

Opening Pressure Setting

26.0 pounds per square inch

Material

Aluminum alloy 2024 seat

Material

Aluminum alloy 2024 stem

Material

Aluminum alloy 2024 body

Material

Stainless steel flow control device and silicon flow control device

Media For Which Designed

Air 1st response

Media For Which Designed

Oil, chlorinated transformer 3rd response

Media For Which Designed

Oxygen, gaseous 2nd response

Surface Treatment

Anodize

Style Designator

Straight thru

Thread Series Designator

Npt 1st end

16649 Series Parts

Pricing and Availability

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16649-18 Cross Reference

16649
14023
7620119
16649
14023
16649-18