4820-01-449-1979

Find complete technical information, availability, and procurement data for: 4820-01-449-1979
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-449-1979

Item Name Code

22113

Assigment Date

09/23/1997 (28 years ago)

A valve specifically designed to automatically maintain a predetermined discharge flow rate which may be adjustable within a specific range. It is designed to be used with various fluids and may be preset and/or adjustable. It may be in-line or cartridge (manifold) design. Excludes:valve, regulating, feed water; valve, regulating, fluid pressure; valve, regulating, fuel oil; valve, regulating, oil pressure, automatic pilot; vavle, regulating, temperature; valve, angle; and valve, globe.

0.266 inches nominal single threaded portion thread length, nimitz class cvn end item identification, 3a single threaded portion thread class, 1.318 inches nominal body inside diameter, 0.375 inches nominal overall height

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: 0.266 inches nominal single threaded portion
Overall Height: 0.375 inches nominal
Body Inside Diameter: 1.318 inches nominal
End Item Identification: nimitz class cvn
Thread Quantity Per Inch: 20 single threaded portion
Nominal Thread Size: 1.8125 inches single threaded portion
Seating Surface Shape: flat
Material: nickel alloy overall
Material Document And Classification: astm b164 assn std single material response or astm a494 gr -30c assn std single material response or qq-n-281 fed spec single material response overall
Style Designator: plain threaded
Thread Series Designator: un single threaded portion

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
4820PL1283137	Valve Seat
803-4384536 PC 85	Valve Seat
803-4384536-61XX-85	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-01-449-1979?

The FSCG of the NSN 4820-01-449-1979 is 4820

Does the NSN 4820-01-449-1979 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-449-1979 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 4820-01-449-1979 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-449-1979 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 4820-01-449-1979 was assigned to the Federal Catalog?

It was assigned 28 years ago, on Tue, Sep 23, 1997