I live in a flood plain and the city requires all electrical devices to be about 6 feet above the ground. This means that all of my pool equipment is on a galvanized rack about 6 feet about the ground. I have three independent pumps - 1 main/filter pump, 1 spa jet pump, and 1 water feature pump. Whenever I open the hair/debris traps on the pumps to clean them, all the prime water flows back into the pool. Could I install check valves on the suction side of each pump to prevent the prime from being lost?
I've heard that check valves don't work well on the suction side, only the pressure side. If that is not true, can someone recommend a good check valve type/brand to install?