05-13-2016, 01:36 PM
Combining my dated industrial career dealing with hydraulics and my high school physics class... if you put the filter before the pump/tank/pressure switch, as the filter begins to restrict flow to the pump the inlet pressure becomes higher (like sucking water through a straw rather than a plumbing pipe) than the outlet pressure. The pressure switch is calibrated for the restricted flow to be on the other side of it- so your pump will cycle on/off more often if the filter is before it. So regardless of how the filters were engineered to function (push versus pull) the pump/pressure system will be more efficient if the filters are after the pump.
All of our plumbing systems are designed by the "pushing" water theory... water pressure has historically been provided by gravity. "Pulling" systems are sometimes superior, because water that is sucked via vacuum through a cracked pipe doesn't leak (though the pipe will take in air etc and that has to be dealt with) and pulling requires more energy. I think I've digressed quite a bit but the pressure switch is expecting the filters to be behind it, not in front.
All of our plumbing systems are designed by the "pushing" water theory... water pressure has historically been provided by gravity. "Pulling" systems are sometimes superior, because water that is sucked via vacuum through a cracked pipe doesn't leak (though the pipe will take in air etc and that has to be dealt with) and pulling requires more energy. I think I've digressed quite a bit but the pressure switch is expecting the filters to be behind it, not in front.