FAQ: How can I control my pump or valve to maintain a range of liquid in my application?

Madison can provide solutions to control the liquid level between a high and a low point. By combining a controller with two float level switch points, a pump or valve can be switched on/off automatically. Two single point float switches, or a custom multi-level float switch with the levels set an appropriate distance apart in the tank can be utilized for this application.

A Double Pole Double Throw (DPDT) relay can be combined with two level switches as shown below for "pump-up" or "pump-down" applications.

Madison stocks an R2-120 Vac pump controller that can be used with float switches or conductivity probes. Madison also stocks relays and controllers to activate pumps, solenoid valves, motors and alarms. Our fluid control engineers are on-hand to assist you with these applications.