4820-01-121-9173

Find complete technical information, availability, and procurement data for: 4820-01-121-9173
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-121-9173

Item Name Code

10958

Assigment Date

11/10/1981 (44 years ago)

A valve designed to release under excessive pressure and/or excessive temperature by opening at a predetermined pressure and/or temperature. Thermostatically operated valves close when the pressure is relieved or the temperature is reduced. Fusible plug valves require replacement of the plug. See also valve, safety relief and valve, regulating. Temperature.

plain face flange first end connection type, 1 end connection quantity, atmospheric valve venting design type, disk, circular flow control device, straight thru body style

Product Characteristics

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

Body Style: straight thru
First End Connection Type: plain face flange
Flow Control Device: disk, circular
End Connection Quantity: 1
Valve Venting Design Type: atmospheric
Material: copper alloy body

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
53-25-8IN	Gaseou Pressure Equalizing Valve
53-25F	Gaseou Pressure Equalizing Valve

FAQs

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

What is the FSCG of the NSN 4820-01-121-9173?

The FSCG of the NSN 4820-01-121-9173 is 4820

Does the NSN 4820-01-121-9173 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809050

Does NSN 4820-01-121-9173 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 4820-01-121-9173 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-121-9173 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 4820-01-121-9173 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Tue, Nov 10, 1981