4820-01-044-3313

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Safety Relief Valve

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Official Item Classification

Name: Safety Relief Valve
(NSN) National Stock Number: 4820-01-044-3313
(FSG) Federal Supply Group: 48 Valves
(FSC) Federal Supply Classification: 4820 Nonpowered Valves
(INC) Item Name Code: 05488
(FIIG) Federal Item Identification Guide: A046B0
Date: 07/10/1977 (49 years ago)

275.0 fahrenheit single response maximum operating temp, spring disk loading method, right-hand all ends thread direction, 3a all ends thread class, 7.0 gallons per minute valve discharge flow rate

Specs & Compatibility

Thread Class

3a all ends

Thread Direction

right-hand all ends

Disk Loading Method

spring

Valve Discharge Flow Rate

7.0 gallons per minute

Maximum Operating Temp

275.0 fahrenheit single response

End Item Identification

aircraft model no. h-1

Connection Style

plain (screw-in cartridge) all ends

Valve Operation Method

automatic

Connection Type

threaded cartridge all ends

Maximum Operating Pressure

3000.0 pounds per square inch single response

Nominal Thread Size

0.750 inches all ends

Opening Pressure Setting

450.0 pounds per square inch

Style Designator

screw-in cartridge

Thread Series Designator

unf all ends

Regulatory Compliance

Precious Metals Indicator

Precious metal content is unknown

Criticality Code

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Hazardous Metals Indicator

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Pseudo Item Name Code

0005488

Related Hardware Products

Part Number	Description
41003002	Safety Relief Valve
H807	Safety Relief Valve

Frequently Asked Questions

What is the FSCG of the NSN 4820-01-044-3313?

The FSCG of the NSN 4820-01-044-3313 is 4820

Does the NSN 4820-01-044-3313 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-044-3313 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 4820-01-044-3313 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-044-3313 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 4820-01-044-3313 was assigned to the Federal Catalog?

It was assigned 49 years ago, on Sun, Jul 10, 1977