4820-01-238-7818

Find complete technical information, availability, and procurement data for: 4820-01-238-7818
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-238-7818

Item Name Code

16996

Assigment Date

08/20/1986 (40 years ago)

A valve designed to release under excessive pressure and/or excessive temperature by opening at a predetermined pressure and/or temperature. Thermostatically operated valves close when the pressure is relieved or the temperature is reduced. Fusible plug valves require replacement of the plug. See also valve, safety relief and valve, regulating. Temperature.

"tee give "adql" and "adqm" only when flanged all ends" body style, any acceptable media for which designed, plain first end style designator, threaded internal boss first end connection type, -30.0 fahrenheit and 160.0 fahrenheit temp rating

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Body Style: "tee give "adql" and "adqm" only when flanged all ends"
Temp Rating: -30.0 fahrenheit and 160.0 fahrenheit
Media For Which Designed: any acceptable
First End Connection Type: threaded internal boss
First End Style Designator: plain
First End Thread Direction: right-hand
Second End Relationship With First End: identical
Third End Relationship With Preceding Ends: identical with first end
Flow Control Device: cone
End Connection Quantity: 3
Temp Adjustability: adjustable
Temp Control Device Type: thermostatic
Supplementary Features: pressure rating 100 to 3000 p.s.i.; appl to support equipment for f101 eng serd 511,acft type b-1b

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
1406M17P01	Pressure and Temper Relief Valve
8821-03-3/8-V-25	Pressure and Temper Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-238-7818?

The FSCG of the NSN 4820-01-238-7818 is 4820

Does the NSN 4820-01-238-7818 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-238-7818 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 4820-01-238-7818 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-238-7818 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 4820-01-238-7818 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Wed, Aug 20, 1986