D-10-C OPTION A NMP-1531 262T304

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-291-5230

Item Name Code

05488

Assigment Date

12/29/1988 (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.

flange all ends connection type, disk flow control device, automatic valve operation method, round with holes all ends flange shape, 4 all ends bolt hole quantity

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: disk
Bolt Hole Quantity: 4 all ends
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Valve Size: 0.500 inches
Adjustable Pressure Range: +262.0 to 304.0 pounds per square inch
Nominal Outside Diameter: 1.500 inches all ends
Face To Face Distance: 3.500 inches
Nominal Thickness: 0.438 inches all ends
Bolt Hole Nominal Diameter: 0.625 inches all ends
Bolt Circle Nominal Diameter: 2.375 inches all ends
Flange Face Design: raised straight all ends
Raised Face Nominal Height: 0.062 inches all ends
Raised Face Nominal Diameter: 1.375 inches all ends
Material: steel body
Style Designator: straight thru flanged 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
D-10-C OPTION A	Safety Relief Valve
D-10-C OPTION A NMP-1531 262T304	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-291-5230?

The FSCG of the NSN 4820-01-291-5230 is 4820

Does the NSN 4820-01-291-5230 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-291-5230 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 4820-01-291-5230 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-291-5230 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 4820-01-291-5230 was assigned to the Federal Catalog?

It was assigned 37 years ago, on Thu, Dec 29, 1988