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
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 Head Material PTFE PTFE PTFE PTFE 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