2640-299ASSY-C

View detailed technical data, stock status, and sourcing information for: 2640-299ASSY-C
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-357-5034

Item Name Code

05487

Assigment Date

02/06/1974 (52 years ago)

spring disk loading method, right-hand 1st end thread direction, right-hand 2nd end thread direction, 2a 2nd end thread class, poppet 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 Class: 2a 2nd end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: poppet
Disk Loading Method: spring
Connection Style: double threaded section boss fitting gasket with locknut sealing, boss 2nd end
Connection Style: plain, optional end (pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external boss 2nd end
Connection Type: threaded internal pipe 1st end
Mounting Facility: bulkhead
Mounting Position: horizontal
Nominal Thread Size: 0.125 inches 1st end
Nominal Thread Size: 0.437 inches 2nd end
Special Features: item furnished with 1 lubricator
Material: steel corrosion resisting overall
Surface Treatment: passivate
Style Designator: straight thru
Thread Series Designator: npt 1st end
Thread Series Designator: unf 2nd end

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
11-79-2902	Check Valve
11-97-2902	Check Valve
2640-299ASSY-C	Check Valve
2640-633X1PC19	Check Valve
EBCN11-97-2902	Check Valve
SS-845-2050555ASSY-C	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-357-5034?

The FSCG of the NSN 4820-00-357-5034 is 4820

Does the NSN 4820-00-357-5034 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-00-357-5034 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 4820-00-357-5034 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-357-5034 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 4820-00-357-5034 was assigned to the Federal Catalog?

It was assigned 52 years ago, on Wed, Feb 6, 1974