4820-00-439-9807

Find complete technical information, availability, and procurement data for: 4820-00-439-9807
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-439-9807

Item Name Code

05488

Assigment Date

04/18/1967 (59 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.

inside spring bonnet type, right-hand 2nd end thread direction, 0.500 inches 2nd end nominal pipe size accommodated, 0.500 inches 1st end nominal pipe size accommodated, right-hand 1st end thread direction

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
Bonnet Type: inside spring
Bonnet Attachment Method: integral
Disk Loading Method: spring
Connection Style: plain (pipe) 2nd end
Connection Style: plain,optional end(pipe) 1st end
Valve Operation Method: manual or automatic
Connection Type: threaded external pipe 2nd end
Connection Type: threaded internal pipe 1st end
Features Provided: pressure tight outlet side
Maximum Operating Pressure: 75.0 pounds per square inch single response
Nominal Thread Size: 0.500 inches 1st end
Nominal Thread Size: 0.500 inches 2nd end
Criticality Code Justification: zzzy
Opening Pressure Setting: 75.0 pounds per square inch
Material: copper alloy body
Material: copper alloy seat
Material: copper alloy stem
Material: plastic polytetrafluoroethylene flow control device
Media For Which Designed: oxygen, liquid single response
Style Designator: angle
Thread Series Designator: npt 2nd end
Thread Series Designator: npt 1st end
Reference Number Differentiating Characteristics: as differentiated by hydrocarbon decontaminated for liquid-oxygen service

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
2509CB376-2	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-439-9807?

The FSCG of the NSN 4820-00-439-9807 is 4820

Does the NSN 4820-00-439-9807 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-439-9807 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 4820-00-439-9807 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-439-9807 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 4820-00-439-9807 was assigned to the Federal Catalog?

It was assigned 59 years ago, on Tue, Apr 18, 1967