271-4900-957265PCV780

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-287-4264

Item Name Code

05488

Assigment Date

01/01/1961 (65 years ago)

right-hand 1st end thread direction, right-hand 2nd end thread direction, poppet flow control device, 0.500 inches 2nd end nominal pipe size accommodated, 0.500 inches 1st end nominal pipe size accommodated

Product Characteristics

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

Nominal Pipe Size Accommodated: 0.500 inches 1st end
Nominal Pipe Size Accommodated: 0.500 inches 2nd end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: poppet
Bonnet Type: exposed spring
Bonnet Attachment Method: threaded
Disk Loading Method: spring
Renewable Seat Ring Type: retaining screw
Maximum Operating Temp: 550.0 fahrenheit single response
Connection Style: plain (pipe) 2nd end
Connection Style: plain,optional end(pipe) 1st end
Valve Operation Method: automatic or manual
Connection Type: threaded external pipe 2nd end
Connection Type: threaded internal pipe 1st end
Features Provided: valve stem lock shield and pressure tight outlet side
Maximum Operating Pressure: 250.0 pounds per square inch single response
Nominal Thread Size: 0.500 inches 1st end
Nominal Thread Size: 0.500 inches 2nd end
Opening Pressure Setting: 250.0 pounds per square inch
Material: copper alloy body
Material: nickel alloy flow control device
Material: nickel alloy seat
Media For Which Designed: steam single response
Style Designator: angle
Thread Series Designator: npt 2nd end
Thread Series Designator: npt 1st 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:

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2076-16PCV780	Safety Relief Valve
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2476-16PCV782	Safety Relief Valve
271-4900-957265PCV780	Safety Relief Valve
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319-4900-1188487PCV904	Safety Relief Valve
3376-12PCV904	Safety Relief Valve
340-4900-1000937PVC5	Safety Relief Valve
346-4900-484711PCV782	Safety Relief Valve
3664-33PCV3	Safety Relief Valve
389588PCV780	Safety Relief Valve
44-1-2-176-250	Safety Relief Valve
533115PCV782	Safety Relief Valve
571-3801-1302581PCV3	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-287-4264?

The FSCG of the NSN 4820-00-287-4264 is 4820

Does the NSN 4820-00-287-4264 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-287-4264 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 4820-00-287-4264 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-287-4264 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 4820-00-287-4264 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961