Making the world safer, healthier and more productive ® HCS Series Horizontal Filter Water Separators Filter water separators are the primary defense against fuel contamination by water and dirt. These housings contain both first-stage coalescer and second-stage separator cartridges with no internal moving parts to continuously remove solids and water contaminants from aviation fuels. Facet filter water separators meet the most stringent military and commercial specifications, as well as specific requirements to be installed in refineries, bulk storage terminals, heliports or airports. Facet Coalescer & Separator Cartridges Pressure Relief Valve Swing Bolt Closure Spider Plate Coalescer Cartridge (First stage) (Screw Base Optional) (Second stage) Separator Cartridge Check Valve Air Eliminator Outlet Inlet Drain Water Drain Differential Pressure Gauge Liquid Level Gauge Manual Vent Valve