The butterfly valves are horizontal shaft double plates disc valves and are available for 250m and below heads HPP s.This type valves have advantages of convenient installation and overhaul,reliable sealing,replacing seal easily,low head loss and large p

The butterfly valves are horizontal shaft double plates disc valves and are available for 250m and below heads HPP s.This type valves have advantages of convenient installation and overhaul,reliable sealing,replacing seal easily,low head loss and large passage water rate.