The type 8681 universal control head from Bürkert provides the advantages of decentralised process control without the prohibitive cost of installing a brand new set of intelligent valves in a production line.
The 8681 Control Head, with ASi interface option was originally designed by the systems division for potential customers with process control systems using other third-party valves where there was a need to create installation kits to enable Bürkert positioners and control heads to be fitted directly onto the existing valves. This helped in creating an intelligent valve for a fraction of the cost of a new valve/controller assembly.
The solution enables customers operating valves from a wide range of manufacturers such as Alfa Laval, Tyco, Aseptomag, Definox, Kieselmann, and many others to install intelligent pneumatic control heads that provide a simple and reliable method of control. Such a system would take over the complete pneumatic actuation, feedback control and diagnostic functions.
Bürkert’s new Type 8681 control head and retrofit kit combination offers universal fitment onto third party valve types including hygienic valves, single seat valves, double seat, mix proof, and also quarter turn ball and butterfly valves that have linear stainless steel actuators. The 8681 is compatible with a full range of fieldbus communication networks, and is enclosed in a robust housing that is rated up to IP67 enabling it to be washed down and cleaned safely.