4820-01-332-8474

Find complete technical information, availability, and procurement data for: 4820-01-332-8474
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-332-8474

Item Name Code

05493

Assigment Date

01/18/1991 (35 years ago)

A valve specifically designed for installation in an air brake system. It is used on trailers, long wheel base vehicles, as well as multiple rear axle vehicles. It serves to speed and synchronize the application and release of air operated service or parking brakes. It may include emergency features for trailer application.

0.375 inches nominal first end outside diameter tube accommodated, socket first end style designator, unthreaded internal tube first end connection type, refrigerant 22 media for which designed, 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
Media For Which Designed: refrigerant 22
First End Connection Type: unthreaded internal tube
First End Style Designator: socket
First End Outside Diameter Tube Accommodated: 0.375 inches nominal
Second End Relationship With First End: identical
Flow Control Device: diaphragm
End Connection Quantity: 2
Valve Expansion Control Type: pressure
Valve Pressure Limiting Device: not included
Valve Equalizer Location: external
Valve Equalizer Connection Type: flared tube
Valve Equalizer Connection Diameter: 0.250 inches nominal
Material: copper alloy body
Material: steel corrosion resisting flow control device

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
DRPE-3-68R	Expansion Valve

FAQs

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

What is the FSCG of the NSN 4820-01-332-8474?

The FSCG of the NSN 4820-01-332-8474 is 4820

Does the NSN 4820-01-332-8474 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809050

Does NSN 4820-01-332-8474 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 4820-01-332-8474 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-332-8474 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 4820-01-332-8474 was assigned to the Federal Catalog?

It was assigned 35 years ago, on Fri, Jan 18, 1991