•          W-SERIES , DIRECTORR® and DUOSEAL® for a variety of high vacuum applications

•          CHEMSTAR® for tough corrosive gas applications

•          GEM® for distillation and rotary evaporation at a wide range of pressures

Welch DIRECTORR and DUOSEAL pumps excel in high vacuum applications such as distillation of high boiling point solvents, freeze dryers, vacuum concentrators, and vacuum ovens. CHEMSTAR pumps are specially built for tough corrosive gas applications. GEM pumps are ideal for distillation and rotary evaporation involving a wide range of solvents as well as operation at a wide range of pressures. All Welch high vacuum pumps are known for excellent performance over a long operating life.