4820-01-220-8278

Find complete technical information, availability, and procurement data for: 4820-01-220-8278
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-220-8278

Item Name Code

05488

Assigment Date

11/20/1985 (40 years ago)

3b 1st end thread class, 3a 2nd end thread class, spring disk loading method, right-hand all ends thread direction, poppet 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 Class: 3b 1st end
Thread Direction: right-hand all ends
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: 275.0 fahrenheit single response
Connection Style: external seat for gasket seal (boss) 2nd end
Connection Style: gasket seal(boss) 1st end
Valve Operation Method: automatic
Connection Type: threaded external tube 2nd end
Connection Type: threaded internal tube 1st end
Thread Quantity Per Inch: 14 2nd end
Adjustable Pressure Range: +160.0 to 240.0 pounds per square inch
Maximum Operating Pressure: 2500.0 pounds per square inch single response
Nominal Thread Size: 0.875 inches all ends
Seat Angle: 37.0 degrees 2nd end
Opening Pressure Setting: 200.0 pounds per square inch
Nominal Outside Diameter Tube Accommodated: 0.625 inches 1st end
Material: steel corrosion resisting body
Media For Which Designed: air 1st response
Media For Which Designed: fuel/oil, hydrocarbon 3rd response
Media For Which Designed: helium 2nd response
Media For Which Designed: water, fresh 4th response
Style Designator: straight thru
Thread Series Designator: unf 1st end
Thread Series Designator: unj 2nd 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
5159T-10TB-200	Safety Relief Valve
5177T-10TB-200	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-220-8278?

The FSCG of the NSN 4820-01-220-8278 is 4820

Does the NSN 4820-01-220-8278 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-220-8278 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 4820-01-220-8278 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-220-8278 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 4820-01-220-8278 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Wed, Nov 20, 1985