4820-00-122-1121

Find complete technical information, availability, and procurement data for: 4820-00-122-1121
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-122-1121

Item Name Code

10958

Assigment Date

10/28/1968 (57 years ago)

A valve consisting of a single deadweight loaded disk, or two deadweight loaded disks each with a seperate seat. It is specifically designed for the relief of small pressure and vacuum conditions within a tank or other container to or from the atmosphere. The center of a single deadweight loaded disk may contain a spring loaded disk forming an additional seat or aperture. It may be spring loaded and/or equipped with a manual unloader on either the pressure or vacuum side. Exclude valve, vacuum breaking.

air media for which designed, manual unloader on vacuum side and nut and gasket and washer furnished items, threaded external pipe first end connection type, 4.5 pounds per square inch maximum operating pressure, single connection, straight flow body style

Product Characteristics

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

Maximum Operating Pressure: 4.5 pounds per square inch
Body Style: single connection, straight flow
Furnished Items: manual unloader on vacuum side and nut and gasket and washer
Media For Which Designed: air
First End Connection Type: threaded external pipe
First End Style Designator: plain
First End Nominal Pipe Size Accommodated: 0.750 inches
First End Thread Direction: right-hand
Flow Control Device: disk, flat
End Connection Quantity: 1
Valve Venting Design Type: atmospheric
Valve Relief Design Type: pressure and vacuum
Material: aluminum alloy seat
Material: aluminum alloy body
Surface Treatment: anodize outside

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
9220106-2	Gaseou Pressure Equalizing Valve
TA330-30-30R	Gaseou Pressure Equalizing Valve
TA330-9220106-2	Gaseou Pressure Equalizing Valve
TA330-9220106-2REVD	Gaseou Pressure Equalizing Valve

FAQs

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

What is the FSCG of the NSN 4820-00-122-1121?

The FSCG of the NSN 4820-00-122-1121 is 4820

Does the NSN 4820-00-122-1121 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809050

Does NSN 4820-00-122-1121 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 4820-00-122-1121 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-122-1121 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 4820-00-122-1121 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Mon, Oct 28, 1968