0994301S0020

View detailed technical data, stock status, and sourcing information for: 0994301S0020
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-347-4349

Item Name Code

05488

Assigment Date

10/21/1991 (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.

disk flow control device, 8 all ends bolt hole quantity, flange all ends connection type, round with holes all ends flange shape, nimitz class cvn end item identification

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: 8 all ends
End Item Identification: nimitz class cvn
Flange Shape: round with holes all ends
Connection Type: flange all ends
Valve Size: 4.000 inches
Bolt Hole Nominal Diameter: 0.750 inches all ends
Bolt Circle Nominal Diameter: 7.500 inches all ends
Material: steel body
Material: steel corrosion resisting flow control device
Material: steel corrosion resisting seat
Material: steel corrosion resisting stem

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-01-384-0742	No Name Available	11/01/1997

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
0994301S0020	Safety Relief Valve
3326527	Safety Relief Valve
9943-5-91SS	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-347-4349?

The FSCG of the NSN 4820-01-347-4349 is 4820

Does the NSN 4820-01-347-4349 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-347-4349 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 4820-01-347-4349 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-347-4349 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 4820-01-347-4349 was assigned to the Federal Catalog?

It was assigned 34 years ago, on Mon, Oct 21, 1991