1F4518

View detailed technical data, stock status, and sourcing information for: 1F4518
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-431-1650

Item Name Code

22113

Assigment Date

01/01/1961 (65 years ago)

An item of various shapes (usually circular, conical, cylindrical, or rectangular) used to prevent or regulate the flow of liquids or gases through the valve. May include a retainer, screw, holder, and the like.

11.750 inches minimum and 11.760 inches maximum body outside diameter, recessed seal accommodation type, 51.700 maximum seat angle in deg, 2.590 inches minimum and 2.605 inches maximum overall height, 2.969 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.

Overall Height: 2.590 inches minimum and 2.605 inches maximum
Body Outside Diameter: 11.750 inches minimum and 11.760 inches maximum
Body Inside Diameter: 2.969 inches nominal
Seat Angle In Deg: 51.700 maximum
Seal Accommodation Type: recessed
Hardness Rating: 60.0 shore durometer d minimum and 70.0 shore durometer d maximum body
Seating Surface Shape: angular
Material: plastic face
Material: rubber seat
Material: rubber or rubber synthetic-natural body
Style Designator: plain

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4310-00-863-4808	No Name Available	05/13/1970

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
012526	Valve Seat
12526A	Valve Seat
1F4518	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-00-431-1650?

The FSCG of the NSN 4820-00-431-1650 is 4820

Does the NSN 4820-00-431-1650 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-431-1650 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 4820-00-431-1650 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-431-1650 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 4820-00-431-1650 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961