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check valve

  1. Plumbing
    This is a long story...and no, it's not about a problem with the sump pump. The house was built with the basement below the water table, so the sump pump has to work continuously to keep the water out. The house sits on a low spot in the area where the houses behind it (for blocks and blocks)...
  2. Plumbing
    I have a basic conventional 50gal gas water heater and a pretty standard copper plumbing setup. I want to add a thermostatic mixing valve at the water heater. I've heard I need check valves on the hot and/or cold lines into the mixing valve? Why? I don't understand why I would check valves with...
  3. Plumbing
    I have a sump pump with a silent check valve. Despite this there is still a loud thud/knocking noise every time it goes in. I've tried replacing the valve and also drilled a small hole in the line by the pump to release air. Still hasn't helped. The rise is about 10 ft from pit bottom to...
  4. Plumbing
    I have to replace my sump pump. I notice that it currently has a Wayne 1/2 hp sump pump. (it was professionally installed 10+ years ago, I think.) Anyway, I plan to buy another Wayne 1/2 hp sump pump and do it myself. But I noticed that the PVC discharge pipe that was installed is 1 1/4 inch...
  5. Plumbing
    Hello all! I've been a long time lurker but have encountered a problem that's puzzling me and would love some input... I recently installed a point of use hot water heater at my kitchen sink to provide faster hot water as mine can take a bit to reach my kitchen sink. The TPR valve periodically...
  6. Plumbing
    We just had our gas hot water heater replaced yesterday and now we are getting hot water intermittently (constantly at one sink) at various points in the house... actually the sinks that are furthest from the water heater. When the plumber installed it he seemed uncertain about how the...
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