Airtech AD Series vacuum boosters are positive displacement, roots-type blowers intended
for use in conjunction with a mechanical backing pump. The AD booster pumps have a simple
weighted bypass design that allows start-up from atmosphere.
The design has the following advantages:
- Pumpdown times cut by up to 50%
- Reduced capital and operating costs
- No pressure sensors, special drives or leaking seals.
- Can operate continuously at all pressures when used with a backing pump.
The bypass design allows the booster to be started at the same time as the backing pump (at atmospheric pressure) as it prevents motor overload. The AD booster pump therefore assists the pumping process from the start of pumpdown.