Rotork rack & pinion fluid power actuators at a municipal waterworks plant in Schwebberg.
Rotork rack & pinion fluid power actuators at a municipal waterworks plant in Schwebberg.

Rotork’s electric and pneumatic actuators have been installed at two sites in Germany with 39 GT pneumatic piston actuators and 13 CK modular electric actuators to be used at two municipal water works which supply the town of Lohr am Main, in Bavaria and surrounding areas.

At both sites water is extracted from six springs and two deep wells while the treatment takes place at seven waterworks. The actuators, which have been installed on butterfly and gate valves ranging from 2-12 in, are being used to drive isolation valves on the water stream to allow filtering, storage and distribution to take place.

Underground containers with capacity for 5,500 m³ store the treated water before it is distributed through a pipeline network which is around 180 km long.

Rotork’s GT range of single and double-acting pneumatic piston actuators offer torques from 2.4 to 15,300 Nm and air pressure of 2 to 10 bar and is suitable for use in hazardous areas. The watertight CK range actuators are suitable for all valves in non-hazardous locations and can operate under the stress of high temperatures and strong vibrations by using separately mounted controls.