JOHNWELL CO. had been serving the Air-Con industry by providing customer of our Motorized 3/4 inch, Two ,Three Ways Valve of Fan Control Unit , for more than 30 years manufacturing experience at Taiwan since 1979. Through the innovation on adopting advanced raw materials our valve housing from conventional Brass materials to Du-Pond Nylon + Fiber to optimize the performances of critical features on CV value and performance of our superior than other Brass made housing valve .