Can some help identify what DH in pool plumbing

  • Last Post 09 July 2022
  • Topic Is Solved
aliusa posted this 01 July 2022



I have a pipe valve labeled DH. I can't figure what it stands for. Does anyone know?










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aliusa posted this 01 July 2022

InyoRich posted this 01 July 2022

That is a good question!  My guess is that it is on the discharge side of your plumbing since one says Spa Overflow and the other says RT1 (Return 1?).  

Unless someone else chimes in, follow the instructions on our guide on How to Identify Pool Plumbing Lines and Valves and let us know what it does!

aliusa posted this 04 July 2022

So, I was told it meant Deep Heat... anyone know what that means?


aliusa posted this 09 July 2022

DH is connected to the bottom returns.