4820-01-256-9873

Find complete technical information, availability, and procurement data for: 4820-01-256-9873
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-256-9873

Item Name Code

22113

Assigment Date

06/10/1987 (39 years ago)

A nonpositive displacement device which utilizes a rotating element with vanes or blades in an enclosure as a means of transferring a liquid from one place to another. It is designed to be driven by a prime mover which is not an integral part of the pump. It may be self-priming.

0.229 inches minimum and 0.239 inches maximum flange seat to disk end height, 0.172 inches nominal single threaded portion thread length, 1.105 inches minimum and 1.113 inches maximum body inside diameter, 1.104 inches minimum and 1.114 inches maximum flange diameter, 3a single threaded portion thread class

Product Characteristics

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

Thread Class: 3a single threaded portion
Thread Length: 0.172 inches nominal single threaded portion
Flange Diameter: 1.104 inches minimum and 1.114 inches maximum
Body Inside Diameter: 1.105 inches minimum and 1.113 inches maximum
Flange Seat To Disk End Height: 0.229 inches minimum and 0.239 inches maximum
Under Flange Height: 0.105 inches minimum and 0.115 inches maximum
Seat Angle In Deg: 45.000 nominal
Seal Accommodation Type: grooved
Thread Quantity Per Inch: 20 single threaded portion
Nominal Thread Size: 1.188 inches single threaded portion
Seating Surface Shape: angular
Criticality Code Justification: zzzy
Special Features: inspection per mil-i-45208; shipment and storage per mil-std-129; clean per mil-std-767
Material: nickel alloy overall
Material Document And Classification: qq-n-288 fed spec single material response overall
Style Designator: threaded flanged
Thread Series Designator: un single threaded portion
Reference Number Differentiating Characteristics: material will be in accordance with ships parts control center activity hx quality control,manufacturing and testing specifications

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
803-4384536-4XXX-13(SPCLN)	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-01-256-9873?

The FSCG of the NSN 4820-01-256-9873 is 4820

Does the NSN 4820-01-256-9873 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-256-9873 require demilitarization?

Usml or ccl military items - demil required. Item managers,, equipment specialists, or product specialists must furnish special demilinstructions. (note 3).

Does NSN 4820-01-256-9873 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-256-9873 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 4820-01-256-9873 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Wed, Jun 10, 1987