Solving Machine Problems Here is a good example where we can add safety, functionality and improved controls to machinery. What you see demonstrated is a Wilkerson Air Preparation assembly. It consists of an air lock out so maintenance can perform their check and maintenance routines safely, Modular filter and Coalescing filter to remove both air borne contaminant as well as .01 micron oil particles. This will keep the machine running and production line moving. This assembly also houses an electro-pneumatic pressure regulator for fine pressure control throughout the machine cycle. And finally, the assembly incorporates a quick exhaust valve. This will insure that the operators can perform their job safely.