4900-984114 ASSEMBLY 1

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-287-4628

Item Name Code

05488

Assigment Date

01/01/1963 (63 years ago)

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes:valve (1), relief, pressure and temperature.

0.500 inches 1st end nominal pipe size accommodated, disk flow control device, 0.750 inches 2nd end nominal pipe size accommodated, right-hand 1st end thread direction, right-hand 2nd 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: 0.750 inches 2nd end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: disk
Bonnet Type: inside spring
Bonnet Attachment Method: threaded
Disk Loading Method: spring
Renewable Seat Ring Type: threaded
Connection Style: plain (pipe) 2nd end
Connection Style: plain,optional end(pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external pipe 2nd end
Connection Type: threaded internal pipe 1st end
Features Provided: pressure tight outlet side
Adjustable Pressure Range: +3000.0 to 3200.0 pounds per square inch
Maximum Operating Pressure: 3250.0 pounds per square inch single response
Nominal Thread Size: 0.500 inches 1st end
Nominal Thread Size: 0.750 inches 2nd end
Extra Long Reference Number: 4900-984114pc2-3-10-11-22-24-26-27-29-30-32-35
Material: copper alloy body
Material: copper alloy flow control device
Material: nickel alloy seat
Material Document And Classification: -1l-b-892 mil spec single material response flow control device
Material Document And Classification: qq-b-637 fed spec single material response body
Material Document And Classification: qq-n-288,compb fed spec single material response seat
Media For Which Designed: air single response
Style Designator: angle
Thread Series Designator: npt 2nd end
Thread Series Designator: npt 1st end
Reference Number Differentiating Characteristics: as differentiated by relief pressure setting and elrn

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
4900-984114	Safety Relief Valve
4900-984114 ASSEMBLY 1	Safety Relief Valve
4900-984114PC2-3-10-11-22-24-26-	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-287-4628?

The FSCG of the NSN 4820-00-287-4628 is 4820

Does the NSN 4820-00-287-4628 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-287-4628 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 4820-00-287-4628 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-287-4628 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 4820-00-287-4628 was assigned to the Federal Catalog?

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