81127S41-26658ALT8PC19

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-446-2782

Item Name Code

05488

Assigment Date

01/01/1963 (63 years ago)

disk flow control device, spring disk loading method, threaded bonnet attachment method, right-hand all ends thread direction, inside spring bonnet type

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
Bonnet Type: inside spring
Bonnet Attachment Method: threaded
Disk Loading Method: spring
Maximum Operating Temp: 100.0 fahrenheit single response
Connection Style: plain (pipe) 2nd end
Connection Style: plain,optional end(pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external pipe 1st end
Connection Type: threaded internal pipe 2nd end
Features Provided: bonnet packing and pressure tight outlet side
Adjustable Pressure Range: +31.0 to 60.0 pounds per square inch
Maximum Operating Pressure: 300.0 pounds per square inch single response
Nominal Thread Size: 0.500 inches all ends
Special Features: 1/64 in. drill through disk for continuous circulation
Material: copper alloy body
Material: copper alloy flow control device
Material: copper alloy seat
Material: steel stem
Media For Which Designed: oil single response
Style Designator: angle
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Below is a list of NSNs that have been officially superseded by this NSN: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
2910-00-362-8794	No Name Available	04/23/1972

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
3249652	Safety Relief Valve
81125S41-21502ALT1PC1	Safety Relief Valve
81127S41-26658ALT8PC19	Safety Relief Valve
81127S41-27185ALT1PC5	Safety Relief Valve
81127S41-27648PC12	Safety Relief Valve
81127S41-36146ALT2PC8	Safety Relief Valve
N36146PC8	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-446-2782?

The FSCG of the NSN 4820-00-446-2782 is 4820

Does the NSN 4820-00-446-2782 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-446-2782 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 4820-00-446-2782 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-446-2782 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 4820-00-446-2782 was assigned to the Federal Catalog?

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