Aquafos pressure tank is manufactured in Taiwan and are suited for all water systems like industrial, domestic and agricultural. The pressure tanks are constructed of a polypropylene liner combined with high grade butyl diaphragm to isolate water and air. This provides a closed system for drinking water preventing the growth of bacteria and vermin intrusion. The cast stainless steel water connection is used for corrosion resistance. All Stairs Industrial Co. Ltd. (Aquafos) pressure tank is quality tested to insure the structural integrity of every tank. To know more Contact Us.