4820-01-420-5231

Find complete technical information, availability, and procurement data for: 4820-01-420-5231
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-420-5231

Item Name Code

05488

Assigment Date

10/19/1995 (30 years ago)

A pipe fitting primarily designed for permanent installation during piping systems operations to fit into another pipe or pipe fitting for sealing. It usually is threaded.

-100.0 fahrenheit minimum operating temp, 400.0 fahrenheit single response maximum operating temp, right-hand all ends thread direction, spring disk loading method, aircraft, hercules c end item identification

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 all ends
Disk Loading Method: spring
Maximum Operating Temp: 400.0 fahrenheit single response
Minimum Operating Temp: -100.0 fahrenheit
End Item Identification: aircraft, hercules c
Connection Style: flared (tube) 1st end
Connection Style: gasket seal(boss) 2nd end
Valve Operation Method: automatic
Connection Type: threaded external tube 1st end
Connection Type: threaded internal tube 2nd end
Maximum Operating Pressure: 1000.0 pounds per square inch single response
Nominal Thread Size: 0.250 inches all ends
Seat Angle: 37.0 degrees 1st end
Opening Pressure Setting: 25.0 pounds per square inch
Nominal Outside Diameter Tube Accommodated: 0.250 inches 2nd end
Special Features: with polytetrafluoroethylene seal
Material: steel comp 303 body
Material: steel corrosion resisting seat
Media For Which Designed: water-oil-gas single response
Style Designator: straight thru note: to be used for valve bodies of one section only.
Thread Series Designator: npt 1st end
Thread Series Designator: nptf 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
5120TP-4TJ-25	Safety Relief Valve
ES9983	Safety Relief Valve
ES9983-01T25	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-420-5231?

The FSCG of the NSN 4820-01-420-5231 is 4820

Does the NSN 4820-01-420-5231 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-420-5231 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 4820-01-420-5231 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-420-5231 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 4820-01-420-5231 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Thu, Oct 19, 1995