NSN 4820-00-167-3741

Safety Relief Valve

FSC: 4820 NIIN: 001673741

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Product Characteristics

NSN:

4820001673741

Demilitarization:

INC:

05488

Shelf Life:

N/A

Thread Class:

3a 1st end

Thread Direction:

Right-hand 1st end

Flow Control Device:

Poppet

Disk Loading Method:

Spring

Maximum Operating Temp:

280.0 degrees fahrenheit single response

Connection Style:

Plain (tube) 1st end

Valve Operation Method:

Automatic

Connection Type:

Threaded external tube 1st end

Maximum Operating Pressure:

200.0 pounds per square inch single response

Thread Size:

0.437 inches 1st end

Opening Pressure Setting:

45.0 pounds per square inch

Outside Diameter Tube Accommodated:

0.250 inches 1st end

Special Features:

Valve size 0.250 in.

Material:

Steel comp 303se

Material Specification:

Qq-s-764, type 303se-canceled federal specification single material response

Media For Which Designed:

Hydrogen 3rd response

Style Designator:

Straight through note: to be used for valve bodies of one section only.

Thread Series Designator:

Unjf 1st end

Part Numbers

2187647
LOCKHEED MARTIN CORPORATION
2187647-4
LOCKHEED MARTIN CORPORATION
559T-4D-45
CIRCOR AEROSPACE, 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

LOCKHEED MARTIN CORPORATION - 49671

CIRCOR AEROSPACE, INC. - 91816