Fusion Bonded Epoxy coated Ductile Iron Ball Check Valve flanged to AS4087 PN16 / AS2129 Table E. Stainless Steel fasteners and NBR coated steel ball. Self Cleaning check valve ideal for applications where debris is present such as pump stations and sewerage which prevents other check valves been used. Minimum back pressure of 0.3 to 0.5 BAR (depending upon size) is needed for a complete seal. Full bore with low pressure drop across the valve. Silent operation with a removable bonnet for cleaing or chainging out the ball without dissassembly of the pipline. Can be installed either on a horizontal or vertical access.