4820-01-130-4321

Find complete technical information, availability, and procurement data for: 4820-01-130-4321
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-130-4321

Item Name Code

05488

Assigment Date

04/22/1982 (44 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.

702.0 cubic feet per minute valve discharge flow rate, 3a 2nd end thread class, 250.0 fahrenheit single response maximum operating temp, 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 Class: 3a 2nd end
Thread Direction: right-hand 2nd end
Flow Control Device: disk
Valve Discharge Flow Rate: 702.0 cubic feet per minute
Maximum Operating Temp: 250.0 fahrenheit single response
Connection Style: streamlined with two brazing rings (tube) 1st end
Valve Operation Method: automatic
Connection Type: threaded external tube 2nd end
Connection Type: unthreaded internal tube 1st end
Thread Quantity Per Inch: 16 2nd end
Adjustable Pressure Range: +211.0 to 240.0 pounds per square inch
Maximum Operating Pressure: 500.0 pounds per square inch single response
Nominal Thread Size: 1.625 inches 2nd end
Nominal Outside Diameter Tube Accommodated: 0.840 inches 1st end
Special Features: valve sz 0.500 in.
Material: copper alloy body
Material: nickel alloy flow control device
Material: nickel alloy seat
Material: steel comp 316 stem
Media For Which Designed: steam single response
Style Designator: angle
Thread Series Designator: uns 2nd end
Furnished Items And Quantity: 1 nut and 1 tailpiece

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
8567	Safety Relief Valve
E8567T51M	Safety Relief Valve
E8714T51M	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-130-4321?

The FSCG of the NSN 4820-01-130-4321 is 4820

Does the NSN 4820-01-130-4321 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-130-4321 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 4820-01-130-4321 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-130-4321 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 4820-01-130-4321 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Thu, Apr 22, 1982