803-4385049-X-043

View detailed technical data, stock status, and sourcing information for: 803-4385049-X-043
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-103-3290

Item Name Code

22113

Assigment Date

11/12/1980 (45 years ago)

A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see insert, engine valve seat.

12.234 inches nominal flange diameter, 45.000 nominal seat angle in deg, 13.313 inches nominal under flange height, 10.234 inches nominal body outside diameter, 1.375 inches nominal flange seat to disk end height

Product Characteristics

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

Flange Diameter: 12.234 inches nominal
Body Outside Diameter: 10.234 inches nominal
Flange Seat To Disk End Height: 1.375 inches nominal
Under Flange Height: 13.313 inches nominal
Seat Angle In Deg: 45.000 nominal
Seating Surface Shape: angular
Body Stepped Inside Diameter: 7.750 inches nominal third step
Body Stepped Inside Diameter: 8.000 inches nominal second step
Body Stepped Inside Diameter: 9.000 inches nominal first step
Special Features: with stem guide
Material: copper alloy 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
803-4385049-X-043	Valve Seat
810-4385049-B-043	Valve Seat
810-4385049-X-043	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-01-103-3290?

The FSCG of the NSN 4820-01-103-3290 is 4820

Does the NSN 4820-01-103-3290 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-103-3290 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 4820-01-103-3290 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-103-3290 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 4820-01-103-3290 was assigned to the Federal Catalog?

It was assigned 45 years ago, on Wed, Nov 12, 1980