Sanco Valves Pvt. Ltd. Manufactures Solid / Flex Design Butterfly Valve. Sanco Valves Pvt. Ltd. Supplies industrial valves. Solid / Flex Design Butterfly Valve has the male and female joint which confines the gasket O.D. And I.D. Solid / Flex Design Butterfly Valve is provided with the standard gasket which is corrugated metal, but flat gaskets of other materials are available when specified. These butterfly valves normally are hand wheel operated, but are also available with gearing, electric motor actuators, or cylinder [pneumatic or hydraulic] actuators for remote operation. It is available in 600 / 900 class.