The Danfoss / Eaton Pipe Products Reducer Coupling is designed for reliable performance in grease, refrigeration, instrumentation, and hydraulic systems. Featuring a durable brass construction, this female NPT coupling ensures secure and leak-free connections.
This adapter supports a wide range of industrial applications, including fuel, LP, and natural gas (available on special order). The coupling is designed for use in conditions where high performance and durability are essential, withstanding temperatures down to -65deg;F.
End sizes of 0.25 inches and threads of 1/4-18 NPTF on both ends make it versatile for various setups. Its robust design is suitable for demanding environments, assuring dependable functionality.
Supplier Part Number: 3300X4
MPN: C1HP16
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Specifications
Alternate Part Numbers
Alternate Part Number23300X4, Alternate Part Number C1HP16, Alternate Part Number MI-00333633, Alternate Part Number MINO-00015X05682, Alternate Part Number MINO-00925F73248
Application
Grease, refrigeration, instrumentation and hydraulic systems. Fuel, LP and natural gas available on special order.
got a 1/4-18 female npt line on both ends. is this the right coupling to join em?
Answer by: Customer Support on Feb 28, 2026, 9:28 AM
Match-up looks right if both sides are 1/4-18 NPTF female, since this adapter is a 1/4-18 female NPTF to 1/4-18 female NPTF coupling.
Question by: Terry G on Dec 7, 2025, 6:23 PM
runs down to what temp can this brass coupling handle? got a refrigeration line that sees some pretty cold conditions and want to make sure it ain't gonna give me trouble
Answer by: Customer Support on Dec 9, 2025, 6:53 AM
Cold temps are no issue for this one. The coupling is rated down to -65 degrees F, so standard refrigeration line conditions fall well within what it can handle. Brass holds up well in low-temp environments, and this fitting is built with exactly that kind of application in mind.
Question by: Shane M on Oct 4, 2025, 2:23 PM
i got two female ports that are both 1/4-18 nptf, is this the right little coupling to tie em together?
Answer by: Customer Support on Oct 5, 2025, 8:04 PM
For joining two matching female NPT ports, this part fits that job. It is a brass female NPT coupling with 1/4-18 NPTF threads on both ends and a 0.25 inch end size.
Question by: Chad W on Mar 24, 2025, 6:15 AM
Will this brass fitting hold up okay in a hydraulic setup, or is it better suited for something else?
Answer by: Customer Support on Mar 25, 2025, 8:59 AM
This adapter is designed for reliable use in hydraulic systems, as well as grease, refrigeration, and instrumentation applications. It can also be special ordered for fuel, LP, and natural gas systems.
