NSN 4820-01-121-8057

Safety Relief Valve

FSC: 4820 NIIN: 011218057

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Product Characteristics

NSN:

4820011218057

Demilitarization:

DEMIL/MLI

INC:

05488

Shelf Life:

N/A

Thread Direction:

Right-hand 1st end

Flow Control Device:

Disk

Bonnet Type:

Inside spring

Bonnet Attachment Method:

Bolted

Disk Loading Method:

Spring

Bolt Hole Quantity:

4 2nd end

Maximum Operating Temp:

450.0 degrees fahrenheit single response

End Application:

Heating system onboard 270 ft wmec cg vessels

Connection Style:

Plain, optional en (pipe) 1st end

Valve Operation Method:

Automatic

Flange Shape:

Round with holes 2nd end

Connection Type:

Threaded internal pipe 1st end

Valve Size:

2.500 inches

Maximum Operating Pressure:

30.0 pounds per square inch single response

Thread Size:

2.500 inches 1st end

Outside Diameter:

6.125 inches 2nd end

Thickness:

0.812 inches 2nd end

First Connection Face To Centerline Distance:

4.000 inches

Bolt Hole Diameter:

0.750 inches 2nd end

Second Connection Face To Centerline Distance:

4.250 inches

Bolt Circle Diameter:

4.500 inches 2nd end

Flange Face Design:

Raised straight 2nd end

Raised Face Height:

0.062 inches 2nd end

Raised Face Diameter:

3.562 inches 2nd end

Material:

Iron cast body

Style Designator:

Angle flanged ends

Thread Series Designator:

Npt 1st end

Part Numbers

1511-H
DRESSER, INC.
3VP953-H
KOMDRESCO CANADA INC

Shipping & Handling

HMIRS:

No MSDS. No hazardous material.

ESD:

No known electrostatic discharge.

Schedule B:

8481400000 - Safety or relief valves.

Professional Distribution

ITAR Registered
DDTC Registered
HAZMAT Certified
AS9120 Quality Standards
100% Quality Inspections

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Cage Codes

DRESSER, INC. - 16497

KOMDRESCO CANADA INC - 57756