4820-01-148-6940

Find complete technical information, availability, and procurement data for: 4820-01-148-6940
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-148-6940

Item Name Code

05488

Assigment Date

03/09/1983 (43 years ago)

A valve with one inlet and one outlet connection with outlet flow parallel to inlet flow. The flow is controlled by the action of a stem which lifts the disk perpendicularly off the center axis of its seat. The stem is at a 90 degree (1.5708 radians) angle to axis of flow. Excludes:valve, stop-check; cock, shutoff, screw stem; and valve, solenoid.

right-hand 1st end thread direction, inside screw bonnet type, bolted bonnet attachment method, right-hand 2nd 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.

Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: disk
Bonnet Type: inside screw
Bonnet Attachment Method: bolted
Disk Loading Method: spring
Maximum Operating Temp: 150.0 fahrenheit single response
Connection Style: plain (pipe) 2nd end
Connection Style: plain,optional end(pipe) 1st end
Valve Operation Method: manual
Connection Type: threaded external pipe 2nd end
Connection Type: threaded internal pipe 1st end
Features Provided: pressure tight outlet side
Maximum Operating Pressure: 400.0 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: 128.0 pounds per square inch
Special Features: reducing connector,0.500 in. nptf to 0.250 in. nominal flare
Material: copper alloy overall
Media For Which Designed: steam single response
Style Designator: angle
Thread Series Designator: npt 2nd end
Thread Series Designator: npt 1st end
Nondefinitive Spec/Std Data: 7 class and a style and 2 type

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
5013600 FIND 13	Safety Relief Valve
ASTM F1508	Safety Relief Valve
ASTM F1508-965CCWWB122	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-148-6940?

The FSCG of the NSN 4820-01-148-6940 is 4820

Does the NSN 4820-01-148-6940 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-148-6940 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 4820-01-148-6940 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-148-6940 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 4820-01-148-6940 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Wed, Mar 9, 1983