346 1-2SIZE1 1-4

View detailed technical data, stock status, and sourcing information for: 346 1-2SIZE1 1-4
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-640-0447

Item Name Code

05487

Assigment Date

01/01/1963 (63 years ago)

plain, optional end (pipe) all ends connection style, automatic valve operation method, 550.0 fahrenheit single response maximum operating temp, right-hand all ends thread direction, disk flow control device

Product Characteristics

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

Thread Direction: right-hand all ends
Flow Control Device: disk
Maximum Operating Temp: 550.0 fahrenheit single response
Connection Style: plain, optional end (pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded internal pipe all ends
Mounting Position: horizontal
Maximum Operating Pressure: 300.0 pounds per square inch single response
Nominal Thread Size: 1.250 inches all ends
Material: iron cast overall
Material Document And Classification: astmfeb000 assn std single material response body
Media For Which Designed: water-oil-gas single response
Style Designator: straight thru
Thread Series Designator: npt all ends

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-00-319-0371	No Name Available	02/16/1970
4820-00-710-2807	No Name Available	09/01/1981

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
2275TYPEYSIZE1-14	Check Valve
346 1-2 1-250	Check Valve
346 1-2SIZE1 1-4	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-640-0447?

The FSCG of the NSN 4820-00-640-0447 is 4820

Does the NSN 4820-00-640-0447 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302010

Does NSN 4820-00-640-0447 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 4820-00-640-0447 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-640-0447 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 4820-00-640-0447 was assigned to the Federal Catalog?

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