638941

View detailed technical data, stock status, and sourcing information for: 638941
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-133-3968

Item Name Code

05487

Assigment Date

06/13/1982 (44 years ago)

A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.

130.0 fahrenheit single response maximum operating temp, plain, optional end (pipe) all ends connection style, right-hand all ends thread direction, spring disk loading method, poppet flow control device

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: 130.0 fahrenheit single response
Connection Style: plain, optional end (pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded internal pipe 1st end
Mounting Position: horizontal or vertical
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.750 inches all ends
Material: steel body
Media For Which Designed: oil, hydraulic single response
Style Designator: straight thru
Thread Series Designator: npt all ends

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
638941	Check Valve
OB1XOHS106N3	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-133-3968?

The FSCG of the NSN 4820-01-133-3968 is 4820

Does the NSN 4820-01-133-3968 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-01-133-3968 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 4820-01-133-3968 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-133-3968 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 4820-01-133-3968 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Sun, Jun 13, 1982