Pick the pump that fits. Not the one we are trying to clear from inventory.

We make five types of vacuum pumps because one type cannot do every job well. Below is what each type actually does — not what the brochure says. If you are not sure which one you need, tell us your application and we will recommend the right one. We have sold against our own product line before. It is better than shipping the wrong pump.

Oil-lubricated. The workhorse. We sell more of these than everything else combined. 0.5 to 630 m³/h. These are the pumps people mean when they say "vacuum pump" without specifying. Good ultimate vacuum — down to about 0.5 Pa for dual-stage models. They need oil changes every 500-1000 hours depending on what you are pumping. If you are pulling clean air, they are cheap to run. If you are pulling solvents or moisture, you need a different pump — or at least a gas ballast and a maintenance schedule you actually follow.

Oil-free. 1 to 125 m³/h. These are simple — a piston goes up and down, no oil in the vacuum chamber. They do not pull as deep as rotary vanes (maybe 15-50 kPa ultimate), but they do not contaminate your process. Medical labs and dental clinics use these heavily. We sell a lot into the Middle East for this exact reason — no oil, no maintenance drama, just works.

Dry running. 60 to 600 m³/h. No oil, no water. Two claw-shaped rotors spin in opposite directions without touching. These are built for continuous duty — food plants run them 24/7 on packaging lines. They cost more than rotary vanes upfront, but there is no oil to change and they do not lose performance when they get warm. If you are currently changing rotary vane oil every week, a claw pump will pay for itself in about 18 months.

Dry screw. 80 to 2500 m³/h. High flow, clean vacuum. These are the pumps you use when you need a lot of cubic meters moved and you cannot tolerate oil contamination. Semicon fabs, chemical distillation columns, large-scale freeze drying. They cost more than any other type we make. They are also the pump that brings in the most repeat OEM business — once a production line is built around a screw pump, nobody wants to requalify a different supplier.

150 to 20,000 m³/h. These are not standalone pumps — they are boosters that sit between your backing pump and your chamber. A roots pump alone cannot pull atmosphere. Pair it with a rotary vane or screw pump, and you get high pumping speed at low pressure. We sell these mostly to system integrators who build vacuum furnaces, coating systems, and large process chambers. If you are asking "do I need a roots booster?", the answer is probably yes if your chamber is bigger than about 500 liters.

Tell us your application, required flow rate, and target vacuum level. We will recommend a pump — even if it means we recommend a type we make less margin on.