NSN 4820-00-450-6539

Safety Relief Valve

FSC: 4820 NIIN: 004506539

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Product Characteristics

NSN:

4820004506539

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

Connection Style:

Flared (tube) 1st end

Valve Operation Method:

Automatic

Connection Type:

Threaded external tube 1st end

Thready Qty Per Inch (tpi):

20 1st end

Thread Size:

0.437 inches 1st end

Seat Angle:

37.0 degrees 1st end

Opening Pressure Setting:

1425.0 pounds per square inch

Outside Diameter Tube Accommodated:

0.250 inches 1st end

Material:

Aluminum alloy seat

Surface Treatment:

Anodize

Surface Treatment Specification:

Mil-a-8625 military specification single treatment response

Style Designator:

Angle

Thread Series Designator:

Unf 1st end

Part Numbers

166L068-3
NORTHROP GRUMMAN SYSTEMS CORPORATION
4644-1
PARKER-HANNIFIN CORPORATION

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

NORTHROP GRUMMAN SYSTEMS CORPORATION - 78022

PARKER-HANNIFIN CORPORATION - 78357