Double Eccentric Half Ball Valve is a high performance valve developed with advanced technology.It also called Semi Ball Valve,C type ball valve and E type ball valve.It is designed on the base of O type ball valve,which solves the difficulties of conveyance of “solid-liquid” and “solid-gas” two phase medium.Mainly applied : 1.Inlet and outlet of pumps for Ammonia water I and Ammonia water II beside carbonating tower 2.Inlet and outlet of mother liquor I and mother liquor II pumps . 3.Installation on the pipe under the cabonation tower to control of shut off the secondary salt solution.