These multi-stage systems combine a Stokes Microvac rotary piston pump (paga 3) with a vacuum blower. They automatically and economically evacuate large ayatems. Equipped with all neces-sary switches and cintrols for automatic or manual operation, the maintain con-stant low pressure even against high gas flow.
Customized multi-stage systems are also available to meet your speciflc needs. Features
.Low ultimate blank-off down to 0.1 micron Hg
.Unique oil purification system
.High efficiwncy (80%+)even in the low-micron range
.Automatic operarion from atmos-pheric pressure to bland-off