NC-191

View detailed technical data, stock status, and sourcing information for: NC-191
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-398-5923

Item Name Code

22113

Assigment Date

01/01/1963 (63 years ago)

An item in the form of one or more thin flexible sheets normally designed to form a tight seal between chambers of a valve, and to transmit motion to a valve disk either directly or through a mechanical linkage. The surface of the item(s) may not be formed or molded to have a beaded or rolled edge, ribs, or any other raised surfaces. The item may contain bolt holes and/or a center hole. Excludes:diaphragm, valve, special shaped and gasket.

1.339 inches minimum and 1.343 inches maximum overall height, 1.125 inches nominal body inside diameter, 2.366 inches minimum and 2.370 inches maximum body outside diameter, 60.000 nominal seat angle in deg, angular seating surface shape

Product Characteristics

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

Overall Height: 1.339 inches minimum and 1.343 inches maximum
Body Outside Diameter: 2.366 inches minimum and 2.370 inches maximum
Body Inside Diameter: 1.125 inches nominal
Seat Angle In Deg: 60.000 nominal
Seating Surface Shape: angular
Material: copper alloy overall
Style Designator: plain
Fsc Application Data: pump valve

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
NC-191	Valve Seat
NC725PC5	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-00-398-5923?

The FSCG of the NSN 4820-00-398-5923 is 4820

Does the NSN 4820-00-398-5923 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-398-5923 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 4820-00-398-5923 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-398-5923 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 4820-00-398-5923 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963