4820-00-256-2301

Find complete technical information, availability, and procurement data for: 4820-00-256-2301
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-256-2301

Item Name Code

22113

Assigment Date

03/15/1971 (55 years ago)

1.975 inches nominal body inside diameter, 2.505 inches nominal body outside diameter, 0.143 inches nominal under flange height, 0.230 inches nominal flange seat to disk end height, 2.765 inches nominal flange 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: 2.765 inches nominal
Body Outside Diameter: 2.505 inches nominal
Body Inside Diameter: 1.975 inches nominal
Flange Seat To Disk End Height: 0.230 inches nominal
Under Flange Height: 0.143 inches nominal
Seat Angle In Deg: 45.000 nominal
Seal Accommodation Type: grooved
Seating Surface Shape: angular
Material: rubber overall
Style Designator: plain flanged

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-00-162-1958	No Name Available	11/01/1983

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
7-68-184	Valve Seat
7-69-077	Valve Seat
7-69-184/7-57-110	Valve Seat
7-75-110	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-00-256-2301?

The FSCG of the NSN 4820-00-256-2301 is 4820

Does the NSN 4820-00-256-2301 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-256-2301 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 4820-00-256-2301 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-256-2301 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 4820-00-256-2301 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Mon, Mar 15, 1971