Lancaster Pump’s VARIOspeed Simplex Constant Pressure Booster Systems are designed with installation and maintenance in mind. They are intended for larger residential and commercial applications where elevation is a concern or sufficient main pressure is not available. Their space-sensitive design includes a wide-capacity range from 10 to 150 gpm. The VARIOspeed controller regulates the speed of the pump to precisely match system demand, decreasing energy usage and allowing for reduced tank size.