sump pump switch

Which sump pump is better? Hydromatics or zoellar
One with mechanical vertial switch or pressure sensative diaphragmatic.

My preference would be the Zoeller Pumps.

Hydromatic

Hydromatic is probably a better design than the

Zoeller.... the switch that zoeller has intergrated into their

pump design will eventually fail you,

I prefer the separate switch not built into the pump itself....

here is my own special design..

the zoeller motor and pump are the best in the world
just buy the motor only and add your own switch to it and you have
a winner

switch

ALL diaphragm switches have one basic flaw. They require that there be an opening to the atmosphere to allow for pressure differentials. That opening is usually a very small tube in the power cord. Being open means that moisture can get into it, and being small means that surface tension can make it immovable preventing the diaphragm from flexing and opeating the switch. When that happens the only way to operate the pump is to suck on the tube to turn it on and blow into it to turn it off. When that happens the only way to operate the pump is to suck on the tube to turn it on and blow into it to turn the pump off.