Safety Relief Valve

Model / MPN: 1811GA | NSN: 4820-01-145-6205

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

4820-01-145-6205

Sold in multiples of

1 EA

DEMIL

DEMIL/MLI

Flow Control Device

Disk

Bolt Hole Quantity

4 1st end

Bolt Hole Quantity

4 2nd end

End Application

Boiler pressure 509s-4pc onboard 378 ft whec coast guard vessels

Valve Operation Method

Automatic

Flange Shape

Round with holes 1st end

Flange Shape

Round with holes 2nd end

Connection Type

Flange 2nd end

Connection Type

Flange 1st end

Mounting Facility

Bracket

Valve Size

1.500 inches

Opening Pressure Setting

150.0 pounds per square inch

Outside Diameter

5.000 inches 2nd end

Outside Diameter

5.250 inches 1st end

Thickness

0.500 inches 1st end

Thickness

0.562 inches 2nd end

First Connection Face To Centerline Distance

4.188 inches

Bolt Hole Diameter

0.500 inches 2nd end

Bolt Hole Diameter

0.625 inches 1st end

Second Connection Face To Centerline Distance

4.406 inches

Bolt Circle Diameter

3.875 inches 1st end

Bolt Circle Diameter

3.875 inches 2nd end

Flange Face Design

Plain 1st end

Flange Face Design

Plain 2nd end

Material

Steel

1811GA Series Parts

Pricing and Availability

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1811GA Cross Reference

1811GB