A4973

View detailed technical data, stock status, and sourcing information for: A4973
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Federal Supply Group

Plumbing, Heating, and Waste Disposal Equipment

Federal Supply Classification

4520 Space and Water Heating Equipment

National Stock Number

4520-00-773-6329

Item Name Code

04906

Assigment Date

03/13/1968 (58 years ago)

steam radiator air vent valve type, 0.250 inches valve connection size, 1.375 inches nominal overall diameter, 5.000 inches nominal overall length, 50.0 pounds per square inch maximum operating pressure

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: 50.0 pounds per square inch
Overall Length: 5.000 inches nominal
Overall Diameter: 1.375 inches nominal
Valve Connection Size: 0.250 inches
Valve Type: steam radiator air vent
Valve Water Pressure Position: closed
Valve Air Return Prevention: required
Valve Shape: vertical straight
Material: copper alloy
Surface Treatment: enamel

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
791	Steam Air Venting Valve
A4973	Steam Air Venting Valve

FAQs

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

What is the FSCG of the NSN 4520-00-773-6329?

The FSCG of the NSN 4520-00-773-6329 is 4520

Does the NSN 4520-00-773-6329 have a Schedule B code assigned?

Yes, the Schedule B code is 8481100090

Does NSN 4520-00-773-6329 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 4520-00-773-6329 contain precious materials?

Precious metal content is unknown

Does NSN 4520-00-773-6329 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 4520-00-773-6329 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Wed, Mar 13, 1968