While both allow for a basic pump to prime automatically, Thompson Pump’s OVT priming systems does this more efficiently, with lower maintenance and higher air handling for faster priming. In addition, the OVT system’s non-contacting rotors eliminate internal wear which increases longevity and provides the reliability of no decrease in performance over time.

The OVT system offers lower maintenance and operating expenses because the system is dry running – no recirculating oil is needed. Eliminating the oil, in turn, eliminates any possible smoke, mist, or pollution that traditional priming systems may experience – offering a much improved eco-friendly alternative to prior technology. Traditional vacuum priming systems require service every 5,000hrs. The OVT priming unit only requires service every 20,000 hrs.

Not only does the Thompson OVT system have high vacuum capability with deeper suction lifts of 28.4 in Hg - but it also maintains high vacuum at lower speeds. This air cooled priming system has no water levels to check and no cooling system to maintain unlike traditional vacuum priming systems. These capabilities allow the OVT priming system to perform in a variety of applications from sewer bypassing to wellpoint dewatering.