4820-01-233-8957

Find complete technical information, availability, and procurement data for: 4820-01-233-8957
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-233-8957

Item Name Code

05488

Assigment Date

06/04/1986 (40 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.

automatic valve operation method, poppet flow control device, 8 1st end bolt hole quantity, 4 2nd end bolt hole quantity, 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.

Flow Control Device: poppet
Disk Loading Method: spring
Bolt Hole Quantity: 4 2nd end
Bolt Hole Quantity: 8 1st end
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Adjustable Pressure Range: +900.0 to 1200.0 pounds per square inch
Nominal Outside Diameter: 6.000 inches 2nd end
Nominal Outside Diameter: 6.500 inches 1st end
Bolt Hole Nominal Diameter: 0.625 inches all ends
Bolt Circle Nominal Diameter: 4.750 inches 2nd end
Bolt Circle Nominal Diameter: 5.500 inches 1st end
Flange Face Design: plain 2nd end
Flange Face Design: raised straight 1st end
Raised Face Nominal Height: 0.188 inches 1st end
Material: nickel alloy flow control device
Material: steel body
Media For Which Designed: hydraulic fluid, mineral base single response

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
MXL508	Safety Relief Valve
MXL508 PIECE 11	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-233-8957?

The FSCG of the NSN 4820-01-233-8957 is 4820

Does the NSN 4820-01-233-8957 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-233-8957 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 4820-01-233-8957 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-233-8957 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 4820-01-233-8957 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Wed, Jun 4, 1986