4820-00-173-2025

Find complete technical information, availability, and procurement data for: 4820-00-173-2025
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-173-2025

Item Name Code

05488

Assigment Date

12/03/1971 (54 years ago)

0.500 inches 1st end nominal pipe size accommodated, 0.500 inches 2nd end nominal pipe size accommodated, poppet flow control device, right-hand 2nd end thread direction, right-hand 1st end thread direction

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Nominal Pipe Size Accommodated: 0.500 inches 1st end
Nominal Pipe Size Accommodated: 0.500 inches 2nd end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: 250.0 fahrenheit single response
Connection Style: plain (pipe) 2nd end
Connection Style: plain,optional end(pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external pipe 2nd end
Connection Type: threaded internal pipe 1st end
Features Provided: pressure tight outlet side
Maximum Operating Pressure: 2500.0 pounds per square inch single response
Nominal Thread Size: 0.500 inches 1st end
Nominal Thread Size: 0.500 inches 2nd end
Opening Pressure Setting: 30.0 pounds per square inch
Special Features: the end connection identified above as the second end is the valve inlet
Material: rubber butadiene-acrylonitrile class nbr and steel comp 303se flow control device
Material: steel comp 303se body
Material: steel comp 303se seat
Material Document And Classification: qq-s-764,type303se-canceled fed spec single material response body
Material Document And Classification: qq-s-764,type303se-canceled fed spec single material response seat
Material Document And Classification: qq-s-764,type303se-cancelded fed spec 2nd material response flow control device
Media For Which Designed: sulfur hexafluoride, gaseous single response
Style Designator: straight thru note: to be used for valve bodies of separable sections.
Test Data Document: 17773-11290853 drawing (this is the basic governing drawing, such as a contractor drawing, original equipment manufacturer drawing, etc.; excludes any specification, standard or other document that may be referenced in a basic governing drawing)
Thread Series Designator: nptf 1st end
Thread Series Designator: nptf 2nd end

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
11290853-1	Safety Relief Valve
5159T4MP30	Safety Relief Valve

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4820-00-173-2025?

The FSCG of the NSN 4820-00-173-2025 is 4820

Does the NSN 4820-00-173-2025 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-173-2025 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 4820-00-173-2025 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-173-2025 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 4820-00-173-2025 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Fri, Dec 3, 1971