Pacific's Whole House Automatic Carbon Filter High-Grade Carbon for Removal of Tastes, Odors, Chlorine and Organic Chemicals from every faucet and shower Automatic Back Washing Control Corrosion-Proof Fiberglass Pressure Tank Noryl Glass-Reinforced Control Valve Automatically Regulates Backwash Cycles 12 Day Adjustable for Maximum Flexibility Single-Level Bypass Valve Sized to Meet Specific Water Flow Rates Can Be Blended with Other Media to Meet Specific Water Contamination Problems PWC Series Specialized Media Filters Pacific Water Conditioning can provide a variety of specialized filters for specific applications. These will range from whole house back washing filters to small under the sink filtration systems. Filter media is varied from high density carbon to ozone.