Safety Relief Valve

Model / MPN: 620B-9-10-11 | NSN: 4820-00-393-4143

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

4820-00-393-4143

Sold in multiples of

1 EA

DEMIL

Thread Class

3b 1st end

Thread Direction

Right-hand 1st end

Flow Control Device

Poppet

Bonnet Type

Inside spring

Bonnet Attachment Method

Integral

Disk Loading Method

Spring

Valve Discharge Flow Rate

10.0 gallons per minute

Connection Style

G4 gasket sea (boss) 1st end

Connection Style

Gasket sea (boss) 1st end

Valve Operation Method

Automatic

Connection Type

Threaded internal boss 1st end

Features Provided

Bonnet packing and pressure tight outlet side

Thready Qty Per Inch (tpi)

14 1st end

Adjustable Pressure Range

+1200.0/+1300.0 pounds per square inch

Maximum Operating Pressure

3100.0 pounds per square inch single response

Thread Size

0.875 inches 1st end

Media For Which Designed

Fuel/oil, hydrocarbon single response

Surface Treatment

Passivate

Style Designator

Angle

Thread Series Designator

Unjf 1st end

620B9 Series Parts

Pricing and Availability

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ISO 9001:2015 + AS9120B
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620B-9-10-11 Cross Reference

620B-9-10-11
909711C2
620B9-10-11