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The A.Y. McDonald 5121-140 is an adapter designed for connecting copper pipe systems with a nominal size of one inch. It features a Flare to MNPT connection type suitable for various plumbing tasks. This product is made from lead-free materials, ensuring safety and compliance with health regulations.
This adapter provides a reliable connection for cold potable water applications, meeting industry standards for performance and safety.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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