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I'm replacing a Wellmate pressure tank with an identical one (the bag leaked) and the new tank did not come with the packet of lube for the QC fitting (O-ring). Anyone know what type of lube should be used? Would rather just use the right thing if I have it, or buy locally, than wait for a...

So this 3/4" CPVC fitting was threaded into a Cu fitting in my attic, in the solar hot water loop. It let go with a bang on a nice sunny day with the circulator running and fortuately I was home to turn off the water. The actual domestic hot water is circulated throught the solar panels, it's...

I have two 2016 Kohler toilets, labeled 1.28 GPF. They have the falling-float-on-a-stem style flush valve. They work fine and are properly adjusted. But they use about 2.5 GPF. Any ideas why this would be and if I can fix it? I want to reduce my water usage since I have a rain water cistern for...

I am considering installing a (third) mini-split, this one after construction. The first 2 have the inside-unit water condensate drain lines routed inside the poured concrete walls, so nicely exiting through the edge of the upstairs deck. Outdoor units are on the ground floor. The third, after...

I have a rain water cistern, and the inlet and overflow pipes (3" PVC) penetrate the wall at the top of the 7' deep cistern. The pipe penetration was done by placing an ordinary 3" nominal PVC coupler in the poured concrete wall when it was poured. The PVC pipes were then passed through the...