Electric  bi-directional Sealing Butterfly Valve with extended stem is developed based on the mechanism of the butterfly valve and semi ball valve . The special butterfly valve can be used at inlet of the water pump,piping network system,recovery stem,high water tank,sewage system and the back flow prevention to shut off or control the pipeline.

Benefits
1.Designed with bidirectional sealing structure,the installation of the bidirectional rotary ball valve will not be restricted by the direction of the fluid.
2.Since the metal sealed  butterfly valve is offered with self-sealing device,reliable sealing performance can be realized under the pressure from medium.
3.Powerful specific pressure of sealing can be obtained the valve is installed on the direction in opposite to that of the fluid.The pressure acts on the valve seat of the bidirectional rotary ball valve. The contact area of the point action is annular,
4.The electrical bidirectional sealing meteal seated butterfly valve has a longer lifetime  due to wear compensation.
5.The unique rotational structure  ,as well as the sphere-conical sealing surface of the valve seat,makes for the cleaning function the solid particle will be crushed when the electric operated bidirectional rotary ball valve is opened or closed.
6.The length of valve stem can reach up to  3.7m

Technical Specifications

Body material :WCB, CF8, CF8M, CF3, CF3M,etc.
Sealing material:Hard alloy
Connection type:weld
Operating type:manual ,electric or pneumatic
Size :2"~40" DN50~DN2000
Pressure:Class 150~Class 300   PN1.0~PN4.0

Application

Municipal Engineering
Circulating water system
Water treatment system
Fire extinguisher system