Introducing the QuickFitting 3/4 in. Press in. X 3/4 in. D FNPT in. Copper Adapter — a precise, durable connector designed to bridge pressed copper piping with a 3/4 in. female NPT threaded port. Built from solid copper and engineered for reliability, this adapter is ideal for buried or outdoor installations where speed and dependability matter most.
What makes this adapter unique
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Two-ways in one fitting: a 3/4 in. press-in end on one side and a 3/4 in. FNPT (female NPT) threaded end on the other, enabling flexible routing from a pressed copper run to threaded components.
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Fast, solder-free installation: the pressed end delivers a secure, leak-tight connection to 3/4 in. copper tubing without flame or soldering, saving time on busy job sites.
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Copper construction: copper isn’t just sturdy — it resists corrosion over time, helping maintain flow and reducing maintenance in challenging environments.
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Underground rated: designed to withstand buried installations, giving you confidence when lines run beneath yards, sidewalks, or outdoor spaces.
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Brand assurance: backed by QuickFitting, a name you can trust for dependable fittings that align with everyday plumbing workflows.
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NSF status: not NSF-listed, so verify compatibility with local codes for any potable water applications before use.
How it works in real-world setups
Use the press end to securely attach the adapter to a 3/4 in. copper tube, then thread a 3/4 in. male NPT fitting or pipe into the FNPT end. This configuration is perfect for tying a pressed copper run into a threaded valve, connector, or pipe segment—reducing the need for multiple fittings and simplifying their layout in tight spaces.
Ideal use cases
- Irrigation manifolds and outdoor water lines where quick assembly saves time on installations or repairs.
- Buried or outdoor-to-indoor transitions that require a robust, underground-rated connection.
- Repairs or retrofits where a pressed copper supply must connect to a threaded port or accessory.
Practical installation tips
- Ensure you’re using a compatible 3/4 in. copper tube and a jaw set appropriate for 3/4 in. copper in your pressing tool.
- Prepare the copper end with a clean, square cut and deburr if necessary to achieve a pristine press.
- On the FNPT side, apply a suitable thread sealant or PTFE tape to the male threads of the mating pipe or fitting before threading into the adapter. Do not apply tape to the female FNPT end.
- Connect and tighten per standard NPT guidelines, then test the system for leaks under pressure before finalizing the installation.
Specs at a glance
- Material: Copper
- End 1: 3/4 in. Press
- End 2: 3/4 in. FNPT (Female NPT)
- Underground rated: Yes
- Brand: QuickFitting
- NSF Listing: No
For installers seeking a reliable, efficient link between pressed copper lines and threaded piping, the QuickFitting 3/4 in. Press in. X 3/4 in. D FNPT in. Copper Adapter delivers strong performance where it matters most — speed, compatibility, and durability in a compact copper design.
