4820-00-735-6791

Find complete technical information, availability, and procurement data for: 4820-00-735-6791
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-735-6791

Item Name Code

05487

Assigment Date

01/01/1963 (63 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.

0.250 inches 2nd end nominal pipe size accommodated, 0.250 inches 1st end nominal pipe size accommodated, right-hand 2nd end thread direction, poppet flow control device, right-hand 1st 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
Nominal Pipe Size Accommodated: 0.250 inches 2nd end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: 180.0 fahrenheit single response
Connection Style: plain (pipe) 2nd end
Connection Style: plain, optional end (pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external pipe 2nd end
Connection Type: threaded internal pipe 1st end
Mounting Position: horizontal or vertical
Thread Quantity Per Inch: 18 2nd end
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.250 inches 1st end
Nominal Thread Size: 0.250 inches 2nd end
Material: steel comp 303 body
Material: steel comp 303 seat
Material: steel comp 304 and rubber butadiene-acrylonitrile class nbr flow control device
Material Document And Classification: fed std 66,aisi 303/sae 30303 fed std single material response body
Material Document And Classification: fed std 66,aisi 303/sae 30303 fed std single material response seat
Material Document And Classification: fed std 66,aisi 304/sae 30304 fed std 1st material response and mil-p-5315 mil spec 2nd material response and fed std 66,aisi 303/sae 30303 fed std 3rd material response flow control device
Media For Which Designed: fuel/oil, hydrocarbon 1st response
Media For Which Designed: water-oil-gas 2nd response
Surface Treatment: passivate
Style Designator: straight thru
Thread Series Designator: npt 2nd end
Thread Series Designator: npt 1st end

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-00-177-6140	No Name Available	02/01/2000
4820-00-841-6083	No Name Available	12/13/1972
4820-01-075-3906	No Name Available	07/01/1992

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
106D-1	Check Valve
1656260PC1	Check Valve
4811/4SS1	Check Valve
4811/4SS1-2	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-735-6791?

The FSCG of the NSN 4820-00-735-6791 is 4820

Does the NSN 4820-00-735-6791 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-00-735-6791 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 4820-00-735-6791 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-735-6791 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 4820-00-735-6791 was assigned to the Federal Catalog?

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