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Technology
Oil-Lubricated Rotary Vane Vacuum Pumps

Oil-Lubricated Rotary Vane Vacuum Pumps

Principle of operation

The rotary vane technology enables a technically simple structure of the vacuum pumps. The consistently high vacuum level in continuous operation is guaranteed through circulating oil lubrication, perfectly coordinated materials and state-of-the-art and precise manufacturing. The standard oil separator ensures clean and oil-free exhaust thanks to its sophisticated extractor system with integrated oil return. When fitted with an optional gas ballast valve, even large amounts of vapor can be processed. A non-return valve in the inlet flange prevents air from flowing back into the vacuum chamber when the vacuum pump is switched off.

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Dry Claw Vacuum Pumps and Compressors

Dry Claw Vacuum Pumps and Compressors

Principle of operation

With claw vacuum pumps, two claw-shaped rotors turn in opposite direction inside the housing. Due to the shape of these claw rotors, the air or gas is sucked in, compressed and discharged. The claw rotors do not come into contact either with each other nor with the cylinder in which they are rotating. Tight clearances between the claw rotors and the housing optimize the internal seal and guarantee a consistently high pumping speed. A synchronisation gearbox ensures exact synchronisation of the claw rotors.

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Dry Screw Vacuum Pumps

Dry Screw Vacuum Pumps

Principle of operation

Dry screw vacuum pumps operate with two screw rotors rotating in opposite directions. The pumping medium is trapped between the individual screw-shaped rotors, compressed and then transported to the gas discharge. During the compression process, the screw rotors do not come into contact with each other, or the cylinder. This means there is no need for lubrication or operating fluids in the compression chamber.

Roots Vacuum Pumps

Vacuum Boosters

Principle of operation

Within the housing of rotary lobe vacuum boosters, two lobes rotate synchronously. Due to the special profile of the rotating lobes and their precise manufacturing, they do not come into contact with each other or the housing. This makes it possible to pump a medium without the need of any operating fluids. The synchronous rotation of the lobes is driven by a pair of gear wheels located on the shaft ends in the gearbox and separated from the compression chamber.

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Dry Running Rotary Vane Vacuum Pumps

Dry Running Rotary Vane Vacuum Pumps

Principle of operation

These vacuum pumps work in accordance to the proven rotary vane technology. Thanks to self-lubricating rotor vanes, no operating fluid is necessary. The compression occurs as part of a completely dry process. A consistently high vacuum level in continuous operation is guaranteed through perfectly coordinated materials, the special graphite vanes in the compression chamber, effective heat discharge and the state-of-the-art and precise manufacturing.

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Rotary Lobe Blowers

Rotary Lobe Blowers

Principle of operation

Three-blade rotary blowers operate with two parallel rotary lobes mounted in opposite directions and rotating within a housing. The pumped medium is sealed in the space between the rotors and housing. It is compressed, pumped through the housing to the gas discharge by the rotary motion and discharged.
A silencer with integrated inlet filter is connected upstream of the blower stage. Once the medium has been compressed during the blower stage, it flows through the downstream discharge silencer. The drive unit is operating with a motor using a v-belt. The v-belt drive enables the blower speed to be precisely adjusted to the process.

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Liquid Ring Vacuum Pumps

Liquid Ring Vacuum Pumps

Principle of operation

Liquid ring vacuum pumps have an eccentrically mounted impeller. The liquid ring is formed by the service liquid (which is usually water) rotating concentrically in its casing. Process gas enters through the suction port, travels between the impeller blades and is compressed prior to exhausting through the discharge port, along with a quantity of service liquid. The vacuum pump can be operated with water recirculation, open or closed loop circuit.

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Side Channel Blowers

Side Channel Blowers

Principle of operation

Regenerative side channel blowers operate according to the impulse principle. Gases are drawn in through the blower inlet and as the impeller rotates, kinetic energy is transferred to the gases being pumped. As a result, the gases move forward through a corkscrew shaped path and are compressed, then discharged through the pressure side exhaust silencer. The impeller is mounted directly on the motor shaft and, together with the specially shaped housing, form the side channel. A Samos side channel regenerative blower can be used to generate both vacuum and pressure. The motor power influences the blower's pumping or discharge speed. The two silencers fitted on the inlet and discharge sides guarantee a quiet operation.

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Scroll Vacuum Pumps

Scroll Vacuum Pumps

Principle of operation

Scroll vacuum pumps consist of both a fixed and an orbiting scroll. As the orbiting scroll moves, voids are created at the inlet of the pump, drawing in the gas. As the rotor further moves, the gas is steadily compressed until it is discharged to atmosphere at the pump exhaust.

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Turbomolecular Vacuum Pumps

Turbomolecular Vacuum Pumps

Principle of operation

Turbomolecular vacuum pumps operate with the principle of a turbine blade. The rapidly rotating rotor blades impart momentum to the gas molecules and their initially random movement is changed to a controlled flow within the pump body. The pumping process of the turbomolecular vacuum pumps moves the gas molecules through the pump from the low pressure inlet flange to the high pressure exhaust port. To create this momentum in the gas molecules, the tips of the rotor blades have to move at high speed.

Diffusion Vacuum Pumps

Diffusion Vacuum Pumps

Principle of operation

The diffusion vacuum pump construction consists of an oil boiler connected to a central multi-stage jet assembly. The heated oil is ejected from the jet assembly at supersonic speeds and the process gas molecules are entrained in the oil jet flow and transferred through the pump body by the heavier oil molecules' momentum. This process moves the gas molecules from the low pressure inlet flange to the foreline vacuum port of the diffusion pump, where the oil is condensed and returned to the boiler and the process gas molecules are removed by the backing pump.

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