Exhaust ValveDN200 Pn16 DIN F4/F5 Handwheel Operated Gate Valve Ductile Iron Ggg50 Rubber Wedge Resilient Seat Gate Valve Water P16 China Factory Gate Valve Sluice Valve, Find details about China Resilient Gate Valve, Gate Valve from DN200 Pn16 DIN F4/F5 Handwheel Operated Gate Valve Ductile Iron Ggg50 Rubber Wedge Resilient Seat Gate Valve Water P16 China Factory Gate Valve Sluice Valve