There are two common types of VFD / VSD Inverter Constant Pressure Booster Pump system. The first type and the most common one includes a water pump, a VFD / VSD Inverter, a 5-ways connector, a pressure sensor, a pressure tank, , a control box, and a system base plate. The second common type has almost all the same parts as the first type except the control box, and system base plate. It uses a piggy bag type of VFD / VSD inverter which can be directly attached to the top of the junction box of a water pump.
However, there is a new type of VFD / VSD Inverter Constant Pressure Booster Pump system which uses All-In-One & In-Line VFD / VSD Constant Pressure Pump Inverter and doesn’t need extra 5-ways connector, pressure sensor, pressure tank, control box, and system base plate. All it needs is to connect this special device and the water pump with its standard union connector and electric cable. The process of the assembling can be done within 10 minutes which would save tremendous time and cost for technicians or installers.