Clean operation (oil free), low cost of ownership, highest reliability – these are just a few benefits that customers can appreciate when they use a diaphragm pump for laboratory or industrial applications. With a broad range of diaphragm pumps – ultimate vacuum from 75 to 1 mbar and peak flow rates up to 138 l/min – Welch offers specific pump families and models for a variety of uses. The rugged low maintenance pumps have PTFE heads, perfluoroelastomer valves, and fluorinated plastic wetted surfaces, making DryFast a durable choice for solvent, acidic, and basic vapors.

Model 2040 provides one of the highest vacuum performances from any two-stage two-head corrosion resistant diaphragm pump on the global market - reaching ultimate vacuum levels below 1 Torr. DryFast 2040 is a durable choice for your vacuum manifold (Schlenk lines), rotary evaporators and vacuum concentrator applications.