The Apollo Expansion PEX / Pex A 1/2 in. Expansion PEX to 1/2 in. D MPT Plastic Male Adapter is a purpose-built connector for PEX-A systems that pairs a 1/2" expansion PEX end with a 1/2" male pipe thread. Crafted in durable plastic and designed for reliability, this adapter keeps your PEX-A runs tidy while delivering a secure, leak-resistant seal for threaded connections.
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End 1: 1/2" Expansion PEX (PEX-A) for a high-integrity expansion connection
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End 2: 1/2" D MPT (male pipe thread) for standard threaded fittings
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Material: Lead-free plastic, built to last in typical plumbing environments
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Maximum Pressure: 200 psi
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Maximum Temperature: 200°F
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ANSI Certified: Meets recognized plumbing standards for安心 performance
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Pack Size: 10 adapters per bag
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Brand & Line: Apollo, Expansion PEX / Pex A
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Connection Type: Not push-to-connect; relies on expansion PEX for the 1/2" end and a threaded MPT connection on the other
How it works
This adapter is designed for Apollo’s PEX-A expansion systems. The 1/2" Expansion PEX end accepts compatible PEX-A tubing when expanded with the appropriate tool, creating a secure, solder-free seal. The opposite end uses a standard 1/2" male pipe thread (MPT) to thread into valves, fixtures, or fittings that accept NPT/male-thread connections. The combination provides a reliable bridge between modern PEX-A piping and traditional threaded components.
Ideal use cases
- Retrofitting existing copper or threaded fixtures to PEX-A supply lines in bathrooms or kitchens
- Connecting a PEX-A loop to a threaded shutoff valve, appliance inlet, or fixture with male threads
- Retrofits in tight spaces where soldering or compression fittings are impractical
Why choose this adapter
Unlike push-to-connect solutions, this Apollo adapter emphasizes a robust expansion-to-threaded transition. Its lead-free plastic construction minimizes corrosion risk, while the 200 psi / 200°F rating covers typical residential water-temperature and pressure scenarios. ANSI certification offers peace of mind about compatibility with standard plumbing codes, and the bagged 10-pack ensures you have spares on hand for ongoing projects.
Practical installation tips
- Verify that End 1 is paired with compatible PEX-A tubing and that the tube is clean, straight, and cut square before expansion
- On the MPT end, apply a suitable thread sealant or PTFE tape designed for plastic threads. Avoid over-tightening to prevent cross-threading or damage to the plastic body
- Support the run to prevent stress on the adapter after installation
- Test the assembly under a safe pressure test before concealing behind walls or panels
Designed for professionals and serious DIYers who work with Apollo Expansion PEX systems, this 1/2 in. Expansion PEX to 1/2 in. D MPT Plastic Male Adapter delivers a dependable, code-friendly solution that simplifies transitions from PEX-A tubing to threaded components. With ten per bag, it’s ready for multiple connections across a project without delays.
