How to replace the valve seat and sealing element

As machinery products, after while use, there will be some problems of ball valves. If you can find problems appeared on valve sear or sealing element, then the way to replace them?

First of all, you'll want to dismantle them.
Keep the ball valves in a condition of half-opened, then clean and eliminated the harmful materials may existed in or outsider the valves. Then next, close the ball valves, and defeat the connecting bolt and nut. Dismantle the actuating device in accordance with follow orders ?¡ìC executive body, attachment bracket, gasket helpful to prevent loose, valve-stem nut, butterfly shrapnel, glam, wear plate, and valve rod padding. Alternative is to dismantle the connecting screw and nut of body cover, separate the valve cover and valve body. Then ensure that the ball is in the state of turn-off, get the valve seat.
Over the dismantling, be careful to avoid the scratch on valve rod surface and sealing part.

reassemble the ball valves
First neat and check the components which have been dismantled, I suggest you to replace the valve seat along with sealing components. During the assembling, do go through order which is opposite of dismantling. Makes use of the specified torsion to lock the connecting bolt of flange and valve-stem nuts. After assembled the executive body, make valve to the state of open or close.
In the dismantling and assembling of ball valves, you ought to be careful to avoid scratch.