In 1999, Vortex Pump LLC purchased the Vortex progressive cavity pump line from TARBY. The pump company's sole purpose was to improve the existing line and to market it only after substantial engineering design improvements were made. The changes for improving the TARBY progressive cavity pump line which required 2 years of research, were made substantially in three areas. The first area was the tank itself. A new tank was developed using hi-spun fiberglass. The second area of improvement is the removal of electronic or mechanical controls from the pump core housing. The only items in the condesation area of the buried tank are the motor, capacitor and the automatic overheat reset on the motor. All the electronic controls of the floats and contactor are now in the control box. There is no need to put pressure switches in the core as Vortex uses floats to sense liquid levels in the tank. The third area of improvement and redesign is in the pump core housing. With the exception of the motor mount, the housing is now made with injection molded PVC parts. All joints between PVC parts are made with joints that conform to appropriate schedule 40 ASTM's. | 