4820-01-346-1649

Find complete technical information, availability, and procurement data for: 4820-01-346-1649
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-346-1649

Item Name Code

05488

Assigment Date

09/28/1991 (34 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.

14 1st end bolt hole quantity, flange all ends connection type, disk flow control device, round with holes all ends flange shape, automatic valve operation 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: disk
Bolt Hole Quantity: 14 1st end
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Valve Size: 9.000 inches
Opening Pressure Setting: 42.0 pounds per square inch
Nominal Outside Diameter: 12.375 inches 1st end10.125 inches 2nd end
Nominal Thickness: 0.562 inches 1st end0.625 inches 2nd end
First Connection Face To Centerline Distance: 8.937 inches
Bolt Hole Nominal Diameter: 0.687 inches 1st end0.687 inches 2nd end
Second Connection Face To Centerline Distance: 9.000 inches
Bolt Circle Nominal Diameter: 8.875 inches 1st end11.062 inches 2nd end
Flange Face Design: plain all ends
Material: bronze body
Style Designator: angle 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
46H0-209/M5,NMP 1115OPT-F 42PSI	Safety Relief Valve
NMP-1115OPTION-F 42PSI SET	Safety Relief Valve
NMP-111OPTION-F 42PSI SET	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-346-1649?

The FSCG of the NSN 4820-01-346-1649 is 4820

Does the NSN 4820-01-346-1649 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-346-1649 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 4820-01-346-1649 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-346-1649 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 4820-01-346-1649 was assigned to the Federal Catalog?

It was assigned 34 years ago, on Sat, Sep 28, 1991