F52M

View detailed technical data, stock status, and sourcing information for: F52M
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-959-5633

Item Name Code

05488

Assigment Date

01/01/1963 (63 years ago)

right-hand 2nd end thread direction, 0.750 inches 1st end nominal pipe size accommodated, 0.750 inches 2nd end nominal pipe size accommodated, right-hand 1st end 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.

Nominal Pipe Size Accommodated: 0.750 inches 1st end
Nominal Pipe Size Accommodated: 0.750 inches 2nd end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: disk
Bonnet Type: inside spring
Bonnet Attachment Method: threaded
Disk Loading Method: spring
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
Maximum Operating Pressure: 150.0 pounds per square inch single response
Nominal Thread Size: 0.750 inches 2nd end
Nominal Thread Size: 0.750 inches 1st end
Opening Pressure Setting: 125.0 pounds per square inch
Material: copper alloy body
Material: copper alloy and rubber butadiene-acrylonitrile class nbr flow control device
Material: copper alloy seat
Material: steel corrosion resisting stem
Media For Which Designed: steam single response
Style Designator: angle
Thread Series Designator: npt 2nd end
Thread Series Designator: npt 1st end

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-00-423-0118	No Name Available	05/28/1973

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
F52M	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-959-5633?

The FSCG of the NSN 4820-00-959-5633 is 4820

Does the NSN 4820-00-959-5633 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-959-5633 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 4820-00-959-5633 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-959-5633 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 4820-00-959-5633 was assigned to the Federal Catalog?

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