Butterfly valve include wafer type butterfly valve and lug style butterfly valve. The valve body and disc material is ductile iron or cast gray iron.
PN10/16 Cast iron valve
Size: DN50 – DN600;
100% hydraulic pressure testing;
Epoxy coating or primer painting.
EPDM/NBR/VITON valve seat.
Butterfly Valve with Gearbox
Cast iron handle/lever operation or gearbox.
The wafer style butterfly valve is designed to maintain a seal against bi-directional pressure differential to prevent backflow in systems designed for unidirectional flow. It accomplishes this with a tightly fitting seal, i.e., gasket, o-ring, precision machined, and a flat valve face on the upstream and downstream sides of the valve.
Cast iron valve include gate valve, butterfly valve, check valve, strainer and ball valve. The body material is cast gray iron or ductile iron.