A-4266-1 1/2

View detailed technical data, stock status, and sourcing information for: A-4266-1 1/2
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-872-0865

Item Name Code

22113

Assigment Date

01/01/1960 (66 years ago)

An item usually metallic, threaded or unthreaded, used for securing to or positioning into a mating part. It is designed to be used in a globe, relief, regulator valve and the like as a means of controlling the flow of liquids or gases in a given system. One end may have an integral disk or be designed to accommodate a metallic or nonmetallic disk. The other end is designed for a handwheel, lever, spring, diaphragm and the like for nonpowered operation or to accommodate a gear, solenoid, air motor and the like for powered operation. The handwheel and/or disk may be furnished with the item. Excludes:stem, faucet; and stem, needle valve.

2.755 inches nominal flange diameter, 1.442 inches nominal body outside diameter, 0.063 inches nominal under flange height, 0.384 inches nominal flange seat to disk end height, 1.225 inches nominal body inside diameter

Product Characteristics

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

Flange Diameter: 2.755 inches nominal
Body Outside Diameter: 1.442 inches nominal
Body Inside Diameter: 1.225 inches nominal
Flange Seat To Disk End Height: 0.384 inches nominal
Under Flange Height: 0.063 inches nominal
Seating Surface Shape: flat
Material: nickel alloy 400 overall
Material Document And Classification: 99565--5123 mfr ref single material response overall
Style Designator: plain flanged

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
380P1077	Valve Seat
A-4266-1 1/2	Valve Seat
A-4266-7	Valve Seat
M86-D-153	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-00-872-0865?

The FSCG of the NSN 4820-00-872-0865 is 4820

Does the NSN 4820-00-872-0865 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-872-0865 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 4820-00-872-0865 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-872-0865 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 4820-00-872-0865 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960