4820-01-057-6792

Find complete technical information, availability, and procurement data for: 4820-01-057-6792
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-057-6792

Item Name Code

05488

Assigment Date

03/17/1978 (48 years ago)

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes:valve (1), relief, pressure and temperature.

poppet flow control device, right-hand all ends thread direction, 250.0 fahrenheit single response maximum operating temp, spring disk loading method, 500.0 cubic feet per minute valve discharge flow rate

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
Valve Discharge Flow Rate: 500.0 cubic feet per minute
Maximum Operating Temp: 250.0 fahrenheit single response
Connection Style: plain,optional end(pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded internal pipe all ends
Adjustable Pressure Range: +3890.0 to 7500.0 pounds per square inch
Maximum Operating Pressure: 10500.0 pounds per square inch single response
Nominal Thread Size: 0.250 inches all ends
Material: plastic polychlorotrifluoroethylene flow control device
Material: steel body
Material: steel seat
Material: steel stem
Material Document And Classification: l-p-385,grade 2 assn std single material response flow control device
Material Document And Classification: qq-s-764,type 303-canceled fed spec single material response stem
Material Document And Classification: qq-s-764,type 303-canceled fed spec single material response body
Material Document And Classification: qq-s-764,type 303-canceled fed spec single material response seat
Media For Which Designed: air 1st response
Media For Which Designed: gas, natural 2nd response
Media For Which Designed: helium 3rd response
Media For Which Designed: nitrogen, gaseous 5th response
Media For Which Designed: oil, hydraulic 4th response
Style Designator: straight thru note: to be used for valve bodies of one section only.
Thread Series Designator: npt all ends
Furnished Items And Quantity: 1 locking device

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
5349T-2PP(L)-4500	Safety Relief Valve
639AS1366-1	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-057-6792?

The FSCG of the NSN 4820-01-057-6792 is 4820

Does the NSN 4820-01-057-6792 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-057-6792 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 4820-01-057-6792 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-057-6792 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 4820-01-057-6792 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Fri, Mar 17, 1978