The invention concerns a refrigeration system comprising a refrigerant circuit which comprises several evaporator paths and a distributor which distributes the refrigerant on the evaporator paths. A first silicon epitaxial layer pattern defines a gate forming region that exposes the silicon substrate between the pair of first sourcedrain regions. The metal billet is heated to a temperature suitable for press working and is set into a container for press forming. The other end of the piston rod is affixed to the crosshead pin. In one form a support is provided at the outboard end of the cam for added resistance against prying.