4820-00-138-1991

Find complete technical information, availability, and procurement data for: 4820-00-138-1991
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-138-1991

Item Name Code

05487

Assigment Date

07/24/1971 (55 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.

right-hand all ends thread direction, spring disk loading method, plain (pipe) all ends connection style, automatic valve operation method, ball 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: ball
Disk Loading Method: spring
Connection Style: plain (pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded external pipe all ends
Mounting Position: horizontal or vertical
Nominal Thread Size: 0.375 inches all ends
Material: steel corrosion resisting body
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
00080A003	Check Valve
50017G012	Check Valve
50017G022	Check Valve
50017G103	Check Valve
99017G022	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-138-1991?

The FSCG of the NSN 4820-00-138-1991 is 4820

Does the NSN 4820-00-138-1991 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-00-138-1991 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 4820-00-138-1991 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-138-1991 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 4820-00-138-1991 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Sat, Jul 24, 1971