Wouldn't using check valves on your return and pump chambers stop any backflow if one happens to become clogged and stop flooding?
No, not unless they were somehow coupled together.........and then you have just cut off all filtrtion to one tank until you notice it......Wouldn't using check valves on your return and pump chambers stop any backflow if one happens to become clogged and stop flooding?
Only if the system is designed in a way that the sump tank cannot handle the maximum amount of water that the siphon can draw from the display tank. This will be determined by at what level the siphon intake draws its water from the display tank.How can that be true when a wet/dry system is predisposed to the possibility of flooding, one becasue it uses a marginally controlled siphon system that dependent on water level which equates to gallons potentially spilling before stopping, and two becasue a sump inherently is a unpressurized open system that potentially can flood uncontrollably just for that fact alone. Which has happened countless times on this forum and will continue to happen as long as sumps are what they are.
Yes the pump pressure is stronger then the standing water and the pump doesn't care, but the water that is free to move in either direction in the mixing chamber and make a choice does care becasue it is a liquid body. And even thou it is being shoved by the pump pressure that doesn't care, that pressure is cumulative in the chamber i.e. shall I go right to the full tank which has a back pressure of 20 PSI or shall I go left which has a back pressure of 17 PSI? Of course the water will and must take the path of least resistance.because the discharge pressure from the FX 5 in the return chamber will be greater than the head of water in either tank, even if the tanks are at different levels...the pump doesn't care where the water is going...it will suck from the one tank and shove it out...there may be marginally different amounts to the two tanks..but one will overflow.