The Micro screen drum filters have and absolute rating of 350 microns and typically filter the coolant to less than 50 ppm above 50 micron. From the Micro screen drum filters, 12500 gpm are sent directly back to the machines for less critical operations and trench flushing.

Plus, an additional 4500 gpm are pumped up to two model HV-7W permanent media Hydro-Vac vacuum filters and two model FSMB-10W Magne-Tight magnetic separators, for super cleaning the coolant.

The Hydro-Vac filters will filter the coolant to less than 25 ppm above 8 micron, while the Magne-Tight is used to remove tramp oil and particles less than eight microns. The superclean coolant is then pumped to the critical machining operations.

The headline central filtration system follows the same process flow steps as the block line. The headline trench is diverted into the top of the two drag tanks located in the right half of the filter gallery.

The majority of the cast iron chips settle in the drag tanks and are carried our by the conveyor. Within the drag tanks, the dirty coolant is pumped through five model V4.5-112 Perma-Flow Micro-screen drum filters. From the Micro screen drum filters, 7000 gpm are sent directly back to the machines for trench flushing and less critical operations.

An additional 1820 gpm are pumped up to two model HV-4S permanent media Hydro-Vac vacuum filters and one model FSMB-10W Magne-Tight magnetic separators, for super cleaning the coolant. The superclean coolant is then pumped to the critical machining operations.