665-2 PL3841-B R1-2

View detailed technical data, stock status, and sourcing information for: 665-2 PL3841-B R1-2
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-228-5651

Item Name Code

05487

Assigment Date

03/18/1986 (40 years ago)

A cylindrical item of various configurations which reciprocates in a valve body, assisting in the movement of the disk to open or close a valve. May include additional components such as ring(s), collar(s), spring(s) and the like. Excludes:disk, valve.

spring disk loading method, right-hand all ends thread direction, plain (pipe) all ends connection style, 225.0 fahrenheit single response maximum operating temp, 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
Disk Loading Method: spring
Maximum Operating Temp: 225.0 fahrenheit single response
Connection Style: plain (pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded external pipe all ends
Mounting Position: horizontal or vertical
Thread Quantity Per Inch: 12 all ends
Maximum Operating Pressure: 6000.0 pounds per square inch single response
Nominal Thread Size: 1.500 inches 2nd end
Nominal Thread Size: 1.500 inches all ends
Nominal Thread Size: 0.438 inches 1st end
Nominal Thread Size: 0.438 inches 3rd end
Special Features: cartridge type
Material: nickel alloy overall
Media For Which Designed: water-oil-gas single response

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
665-2 PL-305-B	Check Valve
665-2 PL3841-B R1-2	Check Valve
665-2-S	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-228-5651?

The FSCG of the NSN 4820-01-228-5651 is 4820

Does the NSN 4820-01-228-5651 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-01-228-5651 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 4820-01-228-5651 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-228-5651 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 4820-01-228-5651 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Tue, Mar 18, 1986