1.Preparation before installation :
(1)Comfirm the application and the valve parameters is consistent.
(2)Check the valve passages and sealing surfaces,and clear the them.
(3)Technician should read manual carefully,according to the instruction
(4)Before installation, set the valve in a closed state to prevent
(5)Flanged butterfly valve uses standard flanges,wafer butterfly valve
2.Electric butterfly valve can be installed in any angle of the pipeline,reverse
3.Flange butterfly valve installed at the end of the pipe, the end needs to
be equipped with flange sheets, to prevent deformation of the sealing
4.Electric butterfly valve control mechanism has been adjusted in factory
in order to prevent installing in wrong direction, the user first switches
on valve manually to the 50% position, checkes the direction indicator
to identify the right direction.