Cast Iron Centric Butterfly Valve Plant: Cast Iron GG25 Centric Butterfly Valves, API 609, Soft Sealed, DN400 (4 Inch), PN20, Lug Type, Wrench.
The centric butterfly valves have the structural features: the valve stem axis, the center of the disc, and the center of the body at the same position. They are simply structured but convenient for manufacturing.