The BTpro40 and BTpro70 models employ patented valve and diaphragm technology that generates a deep 15 torr vacuum pressure with each PTFE head. Both pump models have built-in tunable vacuum to control evaporation rate and minimize accidental bumping and foaming.
The PTFE diaphragm pumps are oil-free. The pumping action and deep vacuum comes from the movement of the PTFE diaphragms within PTFE heads. All wetted surfaces in the flow path are made of fluoroplastic making the BTPro pump highly chemically resistant. As a result the BTpro vacuum pump series is near-zero maintenance. A cold trap placed in-line with BTpro is needed if terpenes are part of the flow path.