A50157

View detailed technical data, stock status, and sourcing information for: A50157
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-529-4180

Item Name Code

05488

Assigment Date

01/01/1963 (63 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.

integral bonnet attachment method, right-hand all ends thread direction, inside screw bonnet type, disk flow control device, 3b all ends thread class

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 3b all ends
Thread Direction: right-hand all ends
Flow Control Device: disk
Bonnet Type: inside screw
Bonnet Attachment Method: integral
Disk Loading Method: spring
Connection Style: gasket seal(boss) all ends
Valve Operation Method: automatic
Connection Type: threaded internal boss all ends
Features Provided: pressure tight outlet side
Adjustable Pressure Range: +1000.0 to 2300.0 pounds per square inch
Nominal Thread Size: 0.562 inches all ends
Nominal Outside Diameter Tube Accommodated: 0.375 inches all ends
Material: aluminum alloy body
Material: steel corrosion resisting flow control device
Material: steel corrosion resisting seat
Material: steel corrosion resisting stem
Style Designator: straight thru
Thread Series Designator: unf all ends

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
10-2911	Safety Relief Valve
A50157	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-529-4180?

The FSCG of the NSN 4820-00-529-4180 is 4820

Does the NSN 4820-00-529-4180 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-529-4180 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 4820-00-529-4180 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-529-4180 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 4820-00-529-4180 was assigned to the Federal Catalog?

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