D447UU-14H-1/2-3/4

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-142-2207

Item Name Code

05488

Assigment Date

11/13/1982 (43 years ago)

A valve that controls flow by a circular disk, or a pair of semicircular disks, attached to a common spindle or lever turning on a diametral axis.

disk flow control device, 0.750 inches 1st end nominal pipe size accommodated, spring disk loading method, 165.0 fahrenheit single response maximum operating temp, 0.500 inches 2nd 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 2nd end
Nominal Pipe Size Accommodated: 0.750 inches 1st end
Flow Control Device: disk
Disk Loading Method: spring
Maximum Operating Temp: 165.0 fahrenheit single response
End Item Identification: air compressors, high pressure
Connection Style: socket with brazing ring 1st end
Connection Style: socket with brazing ring 2nd end
Valve Operation Method: automatic
Connection Type: unthreaded internal pipe 1st end
Connection Type: unthreaded internal pipe 2nd end
Adjustable Pressure Range: +441.0 to 529.0 pounds per square inch
Maximum Operating Pressure: 750.0 pounds per square inch single response
Material: copper alloy body
Material: copper alloy flow control device
Material: steel comp 303 stem
Material: steel comp 304 seat
Material Document And Classification: aisi 303 assn std single material response stem
Material Document And Classification: astm b16 assn std single material response flow control device
Material Document And Classification: fed std 66,aisi 304/sae 30304 fed std single material response seat
Material Document And Classification: qq-c-390,alloy d4/d/ fed spec single material response body
Style Designator: angle

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
20265-16-941SS	Safety Relief Valve
D447UU-14 1/2 X 3/4 IN	Safety Relief Valve
D447UU-14H-1/2-3/4	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-142-2207?

The FSCG of the NSN 4820-01-142-2207 is 4820

Does the NSN 4820-01-142-2207 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-142-2207 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 4820-01-142-2207 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-142-2207 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 4820-01-142-2207 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Sat, Nov 13, 1982