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We returned from a 5-week trip away from the RV to find the drain pipe from the kitchen sinks leaking. Since we’ve already completed the repair, this is just an overview of how the plumbing system is designed to move in and out with the slide-out, not a How-To.
Our kitchen is in a slide-out, and we always wondered how the sink drains connected from the slide-out to the RV. Once we removed the access panel to find the plumbing, we learned how Newmar uses a flexible drain pipe to connect the slide-out plumbing to the RV.
Before you write about it… we know that our front curb-side slide makes huge “snap, crackle, pop” sounds when it runs (the counter and woodwork creaking). It’s done that for years… but it works fine! Just sounds particularly bad on video. lol
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Even though we're handy RVers, we're not professional technicians. So although we're happy with the techniques and products we use, you should be sure to confirm that all methods and materials are compatible with your equipment and abilities. Regardless of what we recommend, consult a professional if you're unsure about working on your RV. Any task you perform or product you purchase based on any information we provide is strictly at your own risk.