4820-00-621-1237

Find complete technical information, availability, and procurement data for: 4820-00-621-1237
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-621-1237

Item Name Code

05487

Assigment Date

02/27/1975 (51 years ago)

spring disk loading method, poppet flow control device, -40.0 fahrenheit 1st response maximum operating temp, right-hand all ends thread direction, pressed-in renewable seat ring type

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
Renewable Seat Ring Type: pressed-in
Maximum Operating Temp: -40.0 fahrenheit 1st response
Maximum Operating Temp: 250.0 fahrenheit 2nd response
End Item Identification: grummin aerospace a10 aircraft
Connection Style: plain (pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded external pipe all ends
Mounting Position: horizontal
Maximum Operating Pressure: 250.0 pounds per square inch single response
Nominal Thread Size: 0.750 inches all ends
Material: copper alloy overall
Media For Which Designed: air 1st response
Media For Which Designed: helium 2nd response
Media For Which Designed: hydrogen 3rd response
Media For Which Designed: nitrogen, gaseous 4th response
Media For Which Designed: oil, hydraulic 5th response
Style Designator: straight thru
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Below is a list of NSNs that have been officially superseded by this NSN: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
4820-01-337-1575	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
038-001A043	Check Valve
2259B6MM	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-621-1237?

The FSCG of the NSN 4820-00-621-1237 is 4820

Does the NSN 4820-00-621-1237 have a Schedule B code assigned?

Yes, the Schedule B code is 8481301090

Does NSN 4820-00-621-1237 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 4820-00-621-1237 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-621-1237 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 4820-00-621-1237 was assigned to the Federal Catalog?

It was assigned 51 years ago, on Thu, Feb 27, 1975