4820-01-251-9306

Find complete technical information, availability, and procurement data for: 4820-01-251-9306
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-251-9306

Item Name Code

05493

Assigment Date

03/26/1987 (39 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.

plain first end style designator, 0.250 inches nominal first end outside diameter tube accommodated, "angle give "adqm" or "adqn" if flanged one or two ends" body style, threaded external tube first end connection type, refrigerant media for which designed

Product Characteristics

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

Body Style: "angle give "adqm" or "adqn" if flanged one or two ends"
Media For Which Designed: refrigerant
First End Connection Type: threaded external tube
First End Style Designator: plain
First End Outside Diameter Tube Accommodated: 0.250 inches nominal
First End Thread Class: 3a
First End Thread Direction: right-hand
Second End Relationship With First End: identical
End Connection Quantity: 2

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-00-192-8873	No Name Available	05/01/1992

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
AA1-4FW20	Expansion Valve
DE2008-1	Expansion Valve
RCA1-4FW20	Expansion Valve
RCD1-4FW15 I.E.5FT 1/4X1/2	Expansion Valve

FAQs

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

What is the FSCG of the NSN 4820-01-251-9306?

The FSCG of the NSN 4820-01-251-9306 is 4820

Does the NSN 4820-01-251-9306 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809050

Does NSN 4820-01-251-9306 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 4820-01-251-9306 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-251-9306 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 4820-01-251-9306 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Thu, Mar 26, 1987