4820-01-305-3179

Find complete technical information, availability, and procurement data for: 4820-01-305-3179
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-305-3179

Item Name Code

05487

Assigment Date

08/03/1989 (37 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.

disk flow control device, 1.250 inches all ends nominal pipe size accommodated, pressed-in renewable seat ring type, weight disk loading method, 100.0 fahrenheit 2nd response maximum operating temp

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: 1.250 inches all ends
Flow Control Device: disk
Disk Loading Method: weight
Renewable Seat Ring Type: pressed-in
Maximum Operating Temp: 100.0 fahrenheit 2nd response
Maximum Operating Temp: 1000.0 fahrenheit 1st response
Connection Style: socket (pipe) all ends
Valve Operation Method: automatic
Connection Type: unthreaded internal pipe all ends
Mounting Position: horizontal
Maximum Operating Pressure: 2000.0 pounds per square inch 2nd response
Maximum Operating Pressure: 235.0 pounds per square inch 1st response
Special Features: swing check type
Material: steel overall
Media For Which Designed: steam 1st response
Media For Which Designed: water-oil-gas 2nd response
Style Designator: straight thru

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
SW-4835 1 1-4IN	Check Valve
SW-4835 1.25 IN	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-305-3179?

The FSCG of the NSN 4820-01-305-3179 is 4820

Does the NSN 4820-01-305-3179 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-01-305-3179 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 4820-01-305-3179 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-305-3179 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 4820-01-305-3179 was assigned to the Federal Catalog?

It was assigned 37 years ago, on Thu, Aug 3, 1989