SUPASS Cast iron fire trench butterfly valve (turbine)

This robust Cast Iron Fire Trench Butterfly Valve, equipped with a turbine (gearbox) for manual operation, is designed for reliable on/off and throttling control in fire protection and fluid handling systems, especially for underground installations or larger sizes needing enhanced torque. Featuring a ductile iron (球铁) body and disc, it offers superior strength and durability. Its clamp-style (wafer/lug type) design enables efficient, space-saving installation between standard pipe flanges.