Crafted by Danfoss Power Solutions (Aeroquip Inc-Alternate) this brass adapter is designed for use in grease refrigeration instrumentation and hydraulic systems. Featuring a 0.5 inch NPTF female end on one side and a 0.375 inch NPTF female end on the other it ensures a secure and reliable connection.
The adapter operates within a temperature range of -65F and higher making it suitable for various industrial applications.
The threads are precision-engineered to 1/2-14 and 3/8-18 specifications ensuring compatibility and leak-tight performance in demanding environments.
Brass construction provides excellent corrosion resistance prolonging the life of the component in harsh conditions.
Supplier Part Number: 3300X8X6
MPN: C1HP21
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Specifications
Alternate Part Numbers
Alternate Part NumberC1HP21, Alternate Part Number MI-00333662, Alternate Part Number MINO-00015X05693, Alternate Part Number MINO-00925F73254
Application
Grease, refrigeration, instrumentation and hydraulic systems. Fuel, LP and natural gas available on special order.
Will this adapter work with regular hydraulic fittings?
Answer by: Customer Support on Jun 12, 2025, 1:46 PM
This brass adapter is designed for use in hydraulic systems, along with grease, refrigeration, and instrumentation applications. It features female NPTF ends, so it should be compatible with standard NPT fittings of the appropriate size.
Question by: Earl H on Dec 23, 2025, 3:26 PM
got a setup that’s 1/2-14 female nptf on one side and 3/8-18 female nptf on the other, is that what this adapter actually is
Answer by: Customer Support on Dec 25, 2025, 6:15 AM
Thread-wise, it matches that exactly. One end is 1/2-14 female NPTF and the other end is 3/8-18 female NPTF, and it’s a straight reducer coupling meant to join those two female pipe thread sizes.
Question by: Hubert S on Mar 18, 2026, 5:57 PM
does this adapter work for hydraulic lines or is it strictly for lighter duty stuff like instrumentation?
Answer by: Customer Support on Mar 20, 2026, 1:34 PM
Hydraulic systems are one of the listed applications for this adapter, right alongside instrumentation, refrigeration, and grease systems. The brass construction holds up well in demanding environments, and the NPTF threads on both ends are precision-cut to give you a leak-tight connection under pressure. The 1/2-14 side steps down to the 3/8-18 side, so it functions as a reducer coupling between those two pipe sizes.
