4820-00-555-1221

Find complete technical information, availability, and procurement data for: 4820-00-555-1221
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-555-1221

Item Name Code

05488

Assigment Date

01/01/1963 (63 years ago)

A parts kit used to service a liquid dispensing pump. Do not use if a more specific name applies.

3568.3 pounds per hour valve discharge flow rate, right-hand 1st end thread direction, spring disk loading 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
Disk Loading Method: spring
Valve Discharge Flow Rate: 3568.3 pounds per hour
Maximum Operating Temp: 550.0 fahrenheit single response
Connection Style: plain (pipe) 1st end
Connection Style: plain,optional end(pipe) 2nd end
Valve Operation Method: manual
Connection Type: threaded external pipe 1st end
Connection Type: threaded internal pipe 2nd end
Adjustable Pressure Range: +1.0 to 250.0 pounds per square inch
Maximum Operating Pressure: 250.0 pounds per square inch single response
Nominal Thread Size: 0.375 inches 1st end
Nominal Thread Size: 0.500 inches 2nd end
Opening Pressure Setting: 75.0 pounds per square inch
Material: copper alloy body
Material: copper alloy flow control device
Material: copper alloy seat
Material: copper alloy stem
Media For Which Designed: air single response
Style Designator: angle
Thread Series Designator: npt 2nd end
Thread Series Designator: npt 1st end

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
1227-3/8	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-555-1221?

The FSCG of the NSN 4820-00-555-1221 is 4820

Does the NSN 4820-00-555-1221 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-555-1221 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 4820-00-555-1221 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-555-1221 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 4820-00-555-1221 was assigned to the Federal Catalog?

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