Safety Relief Valve

Model / MPN: C857-115-2 | NSN: 4820-00-916-7440

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

4820-00-916-7440

Sold in multiples of

DEMIL

Thread Class

3a 1st end

Thread Direction

Right-hand 1st end

Flow Control Device

Disk

Disk Loading Method

Spring

Maximum Operating Temp

275.0 degrees fahrenheit single response

Connection Style

Flared (tube) 1st end

Connection Type

Threaded external tube 1st end

Features Provided

Pressure tight outlet side

Thready Qty Per Inch (tpi)

18 1st end

Maximum Operating Pressure

130.0 pounds per square inch single response

Thread Size

0.562 inches 1st end

Seat Angle

37.0 degrees 1st end

Opening Pressure Setting

115.0 pounds per square inch

Outside Diameter Tube Accommodated

0.375 inches 1st end

Style Designator

Angle

Thread Series Designator

Unf 1st end

C857 Series Parts

Pricing and Availability

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C857-115-2 Cross Reference

28550-1