Welch BTPro Botanical Vacuum Pump



Welch BTpro vacuum pumps provide reliable performance and high flow for your rotary evaporator, glass reactor, vacuum purge oven, or winterization & filtration apparatus.


Pro100 - 115V 60Hz Pro170 - 115V 60Hz Pro40 - 115V 60Hz Pro70 - 115V 60Hz
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Welch BTpro vacuum pumps are oil-free chemical duty diaphragm vacuum pumps. They include PTFE heads and diaphragms for maximum chemical resistance.

All wetted surfaces are made from fluoroplastic, making the pumps maintenance-free. However, a cold trap should always be used between the vacuum pump and application to prevent downstream contamination.

All BTpro models employ patented valve and diaphragm technology to generate a deep vacuum. The BTpro 40 & 70 also have a built-in vacuum control, for more precise evaporation rates. This helps mitigate accidental bumping or foaming during evaporation.

Features & Benefits:

  • High flow for faster processing and throughput
  • Deep, reliable vacuum capability
  • Chemically-resistant internals and diaphragms
  • Oil-free for minimal maintenance

Additional Specifications

System Specifications

MODEL BTpro 40 BTpro 70 BTpro 100 BTpro 170
Free Air Displacement @ 60Hz (CFM) 1.4 2.5 3.5 6
Ultimate Vacuum Pressure, Torr 15 15 6 6
Built-in Adjustable Vacuum Yes Yes ~ ~
Gas Ballast ~ ~ Yes Yes
Diaphragm Material PTFE PTFE PTFE PTFE
Inlet/Outlet Connection 3/8" Barb 3/8" Barb NW(KF)16 NW(KF)16
Agency (National Recognized Lab) CSA CSA cUL cUL
Weight, lbs 15 21.3 40.3 72.3
Overall Dimensions (L x W x H in.) 12 x 7 x 8.3 13.8 x 6.8 x 8.8 9 x 15 x 7 21 x 11 x 12
Electrical 115V 60Hz 1 Ph 115V 60Hz 1 Ph 115V 60Hz 1 Ph 115V 60Hz 1 Ph
Welch BTPro Botanical Vacuum Pump
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