Vacuum pump units with a two or three-stage chemistry diaphragm pump. Compact construction with chemistry diaphragm pump on base plate, separator on suction side made of glass with protective coating (AK), one or two electromagnetic chemistry valves on the suction line, exhaust waste vapour condenser with collecting flask, and one or two CVC 3000 vacuum controllers on the controller support.

• Oil-free vacuum down to 2 mbar, high pump capacity
• Equipped with chemistry diaphragm pumps with high chemical resistance (parts in contact with media are made from PTFE compounds and similar)
• Vacuum controller for optimum vacuum control and regulation
• Solenoid valve on the suction line (24 V-)
• Suction-side separator and insulated exhaust waste vapour condenser with shared intensive separation of all vapour fractions that condense at cold water temperature and atmospheric pressure

These vacuum pump units are ideal for creating and controlling vacuum in chemical laboratories down to 1,5 mbar final vacuum. The three-stage chemistry diaphragm pump achieves a low final vacuum while assuring a higher pump capacity. This ensures exceptional performance in processes involving solvents, which often have high boiling points, and in which a vacuum control must function reliably and reproducibly below 20 mbar. The Model PC 611 has a manually controlled vacuum port and integral non-return valves as well as the electronically controlled vacuum port to prevent separate processes from interfering each other.