Overall & Connection Dimensions & Weight--Model: metal Seal Butterfly Valve Wafer type  ( fig: B5000W) )--This valve is suitable for use in Chemical, oil, power generating, metallurgy industriesand city heat-supply system as a flow adjusting and shutting unit.Safe and reliable in operation, high interference-resistance.Adoping design of double-ecentric, the friction on sealing ring may be decreasedto extend service life.