Plumbing – Will I lose water pressure going from a 2“ pipe to a 1/2” pipe then back to 2″

plumbingpoolwater-pressure

I have jimmied up a pool heater from an idea on YouTube, but just expanded it. I have a water line of 2" PVC, piped down to 1/2" copper, so it can run through a coil, then increased back to 2" PVC, and re-connected with the original pool hose of 2".

Will this keep the constant pressure that it starts with, or will I lose water pressure. It seems to have lost pressure, trying to get back into the 2" inch hose. Any suggestions?

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Best Answer

I believe the pressure loss depends on the flow rate. There will be some loss of pressure.

To avoid it you need 2" copper pipe or multiple parallel 1/2" pipes (probably more than 16).

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