1/2 1543-D-ZDB1

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-337-3889

Item Name Code

05488

Assigment Date

04/14/1991 (35 years ago)

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

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: integral
Disk Loading Method: spring
Maximum Operating Temp: 406.0 fahrenheit single response
Connection Style: plain (pipe) 1st endplain,optional end(pipe) 2nd end
Valve Operation Method: automatic
Connection Type: threaded external pipe 1st endthreaded internal pipe 2nd end
Adjustable Pressure Range: +151.0 to 300.0 pounds per square inch
Nominal Thread Size: 0.750 inches 1st end0.500 inches 2nd end
Special Features: soft seat
Material: copper alloy bodycopper alloy flow control deviceplastic polytrifluoroethylene seatcopper alloy stem
Style Designator: angle
Thread Series Designator: npt all ends
Furnished Items And Quantity: 1 lever

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
1/2 1543-D-XDB1	Safety Relief Valve
1/2 1543-D-ZDB1	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-337-3889?

The FSCG of the NSN 4820-01-337-3889 is 4820

Does the NSN 4820-01-337-3889 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-337-3889 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 4820-01-337-3889 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-337-3889 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 4820-01-337-3889 was assigned to the Federal Catalog?

It was assigned 35 years ago, on Sun, Apr 14, 1991