4820-01-142-9657

Find complete technical information, availability, and procurement data for: 4820-01-142-9657
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-142-9657

Item Name Code

05488

Assigment Date

11/23/1982 (43 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.

180.0 fahrenheit single response maximum operating temp, 0.750 inches 1st end nominal pipe size accommodated, 0.500 inches 2nd end nominal pipe size accommodated, disk flow control device, spring disk loading method

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: 0.500 inches 2nd end
Nominal Pipe Size Accommodated: 0.750 inches 1st end
Flow Control Device: disk
Disk Loading Method: spring
Maximum Operating Temp: 180.0 fahrenheit single response
End Item Identification: air compressors, high pressure
Connection Style: socket with brazing ring 1st end
Connection Style: streamlined with two brazing rings 2nd end
Valve Operation Method: automatic
Connection Type: unthreaded internal pipe all ends
Adjustable Pressure Range: +1251.0 to 1550.0 pounds per square inch
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Material: copper alloy body
Material: steel comp 303 flow control device
Material: steel comp 304 seat
Material Document And Classification: aisi 303 assn std single material response flow control device
Material Document And Classification: fed std 66,aisi 304/sae 30304 fed std single material response seat
Material Document And Classification: qq-c-390,alloy d4/d/ fed spec single material response body
Media For Which Designed: water-oil-gas single response
Style Designator: angle
Furnished Items And Quantity: 2 nut and 2 tailpiece

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
09523H03C1251	Safety Relief Valve
9523 W/VITON PKG 125ITI550PSI	Safety Relief Valve
D49-30UU-06 1/2 IN	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-142-9657?

The FSCG of the NSN 4820-01-142-9657 is 4820

Does the NSN 4820-01-142-9657 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-142-9657 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 4820-01-142-9657 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-142-9657 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 4820-01-142-9657 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Tue, Nov 23, 1982