Sealless Pumps

In the early 1980s environmental protection became a vital consideration when planning new industrial plants.

Today, it is one of the most important topics in any public discussion. In Germany, for example, strict legal rules were introduced to protect the air against pollution. The ‘TA-Luft’ regulation restricts the operation of mechanical sealed pumps when pumping toxic and dangerous liquids. To meet these requirements, in 1985 we introduced the sealless pump design with our own permanent magnetic couplings.

Because of the hermetically sealed design, the operation was initially limited to applications where no leakage was allowed. Since the introduction of the sealless pumps, investigative studies of pump life, availability and maintenance costs have been performed involving different pump designs, with the result that pumps with mechanical seals are less reliable and require more maintenance.

Leaking mechanical seals caused approximately 90% of repair and maintenance in the chemical and petrochemical industry. These facts led to a promotion of the magnetic coupled pumps, which today represent over 50% of our production.

Magnetic Drive

Magnetic coupled Pumps are of sealless design. the containment shell forms a closed system with hermetically sealed liquid end. magnetic driven pumps are designed to improve plant and personnel safety, especially when handling toxic, explosive or other dangerous liquids, which react on contact with the atmosphere.

Magnetic Drive Pumps

Contact us to find out about our complete range of Magnetic Drive Pumps.

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Canned Motor

Canned motor pumps are Characterised by a compact, integrated unit without mechanical seal. The motor and pump form a unit with the rotor and the impeller fitted onto a common shaft.

The rotor is guided by two Identical, medium-lubricated slide bearings. The stator on the drive motor is separated from the rotor space using a thin stator liner.

Canned Motor Pumps

Double sealing cover: even in very rare cases of can destruction no liquid will penetrate to the outside, it is 100% leakage-free. No mechanical seals: these cost-intensive wearing parts are cancelled by the seal-less method of construction, therefore optimal MTBF values (mean time between failure), reduced maintenance costs and long service life.

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