4820-00-042-7888

Find complete technical information, availability, and procurement data for: 4820-00-042-7888
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-042-7888

Item Name Code

05487

Assigment Date

05/22/1968 (58 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.

3a 2nd end thread class, right-hand 1st end thread direction, 0.250 inches offset distance, 0.250 inches 1st end nominal pipe size accommodated, right-hand 2nd 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: 0.250 inches 1st end
Thread Class: 3a 2nd end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Offset Distance: 0.250 inches
Flow Control Device: disk
Disk Loading Method: spring
Connection Style: flared (tube) 2nd end
Connection Style: plain, optional end (pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external tube 2nd end
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: 0.250 inches 1st end
Nominal Thread Size: 0.562 inches 2nd end
Seat Angle: 37.0 degrees 2nd end
Nominal Outside Diameter Tube Accommodated: 0.375 inches 2nd end
Material: aluminum alloy seat
Material: aluminum alloy body
Style Designator: straight thru w/offset
Thread Series Designator: npt 1st end
Thread Series Designator: unf 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
486-6D11-6	Check Valve
8209387P30	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-042-7888?

The FSCG of the NSN 4820-00-042-7888 is 4820

Does the NSN 4820-00-042-7888 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-042-7888 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 4820-00-042-7888 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-042-7888 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 4820-00-042-7888 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Wed, May 22, 1968