4820-01-250-8577

Find complete technical information, availability, and procurement data for: 4820-01-250-8577
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-250-8577

Item Name Code

05485

Assigment Date

03/07/1987 (39 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.

packing retaining bonnet type, 300.0 fahrenheit single response maximum operating temp, plain,optional end(pipe) all ends connection style, right-hand all ends thread direction, stem flow control device

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: stem
Bonnet Type: packing retaining
Maximum Operating Temp: 300.0 fahrenheit single response
Connection Style: plain,optional end(pipe) all ends
Valve Operation Method: manual
Connection Type: threaded external pipe all ends
Mounting Facility: panel
Maximum Operating Pressure: 600.0 pounds per square inch single response
Nominal Thread Size: 0.250 inches all ends
Material: copper alloy stem
Material: plastic polytetrafluoroethylene packing
Style Designator: straight thru
Thread Series Designator: npt all ends
Furnished Items And Quantity: 1 nut

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
B-4JN4-PM	Globe Valve

FAQs

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

What is the FSCG of the NSN 4820-01-250-8577?

The FSCG of the NSN 4820-01-250-8577 is 4820

Does NSN 4820-01-250-8577 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 4820-01-250-8577 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-250-8577 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 4820-01-250-8577 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Sat, Mar 7, 1987