N240X9

View detailed technical data, stock status, and sourcing information for: N240X9
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-138-5429

Item Name Code

16996

Assigment Date

07/30/1971 (55 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.

"angle give "adqm" and "adqn" only if flanged one or two ends" body style, plain first end style designator, 210.0 fahrenheit temp rating, water, fresh media for which designed, threaded internal pipe first end connection type

Product Characteristics

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

Body Style: "angle give "adqm" and "adqn" only if flanged one or two ends"
Temp Rating: 210.0 fahrenheit
Media For Which Designed: water, fresh
First End Connection Type: threaded internal pipe
First End Style Designator: plain
First End Nominal Pipe Size Accommodated: 1.000 inches
First End Thread Direction: right-hand
Second End Relationship With First End: identical
Flow Control Device: piston, spring loaded
End Connection Quantity: 2
Temp Adjustability: not adjustable
Temp Control Device Type: thermostatic
Material: steel body
Material: steel flow control device
Material: steel seat
Material: steel stem
Surface Treatment: paint outside

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
240X8	Pressure and Temper Relief Valve
N240X9	Pressure and Temper Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-138-5429?

The FSCG of the NSN 4820-00-138-5429 is 4820

Does the NSN 4820-00-138-5429 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-138-5429 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 4820-00-138-5429 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-138-5429 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 4820-00-138-5429 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Fri, Jul 30, 1971