The MFO actuator from the proven 812/813 Series is a pneumatic actuator that was specially designed to be compatible with sterile and fine-chemical applications, and is particularly well suited for the tight space requirements associated with prefabricated system components. This diaphragm actuator is said to be the first to integrate the fully welded construction of the actuator chamber as used on piston actuators in sterile processes. The design facilitates extremely small dimensions and maintains a specified diaphragm of 143 cm2. The circular formation of bolts that affix the diaphragm in conventional diaphragm actuators has been eliminated, to provide a smooth, easy-to-clean surface that is free of bolt heads and other sharp edges. — ARCA Regler GmbH, Tönisvorst, Germany