Botanical Vacuum Pump Series ✓ High flow for faster processing ✓ Deep vacuum for higher purity ✓ Chemically resistant for long service interval ✓ Oil-free for low maintenance Agency listing: Welch’s BTpro vacuum pump series has a flow and vacuum level to provide fast performance for your size of rotary evaporator, glass reactor, purge oven, or winterization filtration apparatus. These chemical duty PTFE diaphragm pumps are oil-free. The pumping action and deep vacuum comes from the movement of PTFE diaphragms within PTFE heads. All wetted services 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 pump is needed if terpenes are part of the flow path. The BTpro40 and BTpro70 models employ patented valve and diaphragm technology that generates a deep 15 Torr vacuum pressure with each PTFE head. In addition, both pump models have built-in tuneable vacuum to control evaporation rate. The tunable vacuum adjustment can also be used to stop accidental bumping/foaming. A chemically resistant, manual vacuum regulator with stainless steel dial gauge is available for BTpro100. See ordering information for further details. For sales, service and technical support, please contact the US factory at 847-676-8800 or contact your local Welch sales representative. Gardner Denver Thomas Inc. 1601 Feehanville Drive Suite 550 © Gardner Denver Thomas Inc. All rights reserved. 1400011-20 03/2020

Note: 1. Two 3/8” hose barb fittings are provided that thread into NW16 flange to allow use of 3/8” ID hose. Note: 2. Export controlled. Shipper’s letter of intent required to ship pump model outside USA due to flow and and PTFE construction. Please check out all our brands for your mission-critical flow control technologies: TRICONTINENT by Gardner Denver ZINSSERANALYTIC by Gardner Denver OEM Pumps Vacuum Pumps & Systems Syringe Pumps