4820-00-991-8242

Find complete technical information, availability, and procurement data for: 4820-00-991-8242
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-991-8242

Item Name Code

05487

Assigment Date

01/01/1963 (63 years ago)

250.0 fahrenheit 2nd response maximum operating temp, right-hand all ends thread direction, -40.0 fahrenheit 1st response maximum operating temp, poppet flow control device, spring disk loading method

Product Characteristics

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

Thread Direction: right-hand all ends
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: -40.0 fahrenheit 1st response
Maximum Operating Temp: 250.0 fahrenheit 2nd response
Connection Style: plain, optional end (pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded internal pipe all ends
Mounting Position: horizontal or vertical
Maximum Operating Pressure: 5000.0 pounds per square inch single response
Nominal Thread Size: 0.250 inches all ends
Special Features: other media utilized: alcohol,ethylene glycol,freon 12,gasoline,helium,hydrogen,hydraulic fluid (mineral base),lube oil,natural gas,nitrogen,water; cracking pressure 2 - 4 psi
Material: rubber butadiene-acrylonitrile class nbr seat
Material: steel comp 416 body
Material Document And Classification: asis416 assn std single material response overall
Media For Which Designed: acetylene 1st response
Media For Which Designed: air 2nd response
Media For Which Designed: ammonia, liquid 4th response
Media For Which Designed: ammonia, gaseous 3rd response
Media For Which Designed: carbon dioxide 5th response
Style Designator: straight thru
Test Data Document: "81349-mil-s-51173 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.)."
Thread Series Designator: npt all ends

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-00-458-8369	No Name Available	08/01/2003
4820-00-547-3056	No Name Available	10/01/1993
4820-00-618-5022	No Name Available	03/01/1977
4820-00-994-9776	No Name Available	08/01/1992

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
162349R2PP	Check Valve
2349R-2PP	Check Valve
2518992-5	Check Valve
483-1-4SS2	Check Valve
483-1-4SS2-2	Check Valve
483-1/4SS22-2	Check Valve
B81-8-898	Check Valve
C02AHP4FF	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-991-8242?

The FSCG of the NSN 4820-00-991-8242 is 4820

Does the NSN 4820-00-991-8242 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-00-991-8242 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 4820-00-991-8242 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-991-8242 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 4820-00-991-8242 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963