- @ @ @ @ @ Our main products PROCESS FOR SYNTHETIC RESIN, FIBER, POLYMER etc. PC, PBT, PTA, PVA, PA6, PA66, PET, POLYESTER ...... General features of Aska Valves DIVERTER VALVES World's standard style 3way, 4way, 5way and more PLUG VALVES High pressure use available Polymer filter application NEW PRODUCTS ! Fully automatized changeover plug valve SAMPLING/DRAIN VALVES Vertical and Horizontal ...www.bb-aska.co.jp