Bi-Directional Spherical Sealing Butterfly Valve

Bi-Directional Spherical Sealing Butterfly Valve is developed based on the mechanism of the butterfly valve and segment 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  spherical sealing butterfly valve will not be restricted by the direction of the fluid.
 2.Since the metal sealed  spherical sealing 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  valve has long service life 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 spherical sealing butterfly valve is opened or closed.


Technical Specifications 

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

Standard :

Design structure :GB/T 26146-2010   GB/T 12238-2008

Face to face :ASME B16.10-2009   GB/T 12238-2008
  
Flange :ASME B16.5-2013   GB/T 12221-2005  

Inspection and pressure test :GB/T 13927-2008   API 598-2009


Application

Municipal Engineering 
Circulating water system 
Water treatment system 
Fire extinguisher system 

We can customize valve body materials and sizes according to different customer requirements
You can also have the full set of after-sales service provided by Quanshun Group！