Thank you for your attention everyone. The butterfly valve type is a Wafer type, we've already removed the valve from the line and seen the corrosion from the valve. Just a correction regarding my post it is completely stuck up. Any other suggestion that will make the disc move easier on...
Hello everyone just want to ask for some suggestions on how i might resolve my problem on butterfly valves what happen i didn't indicated the medium what will be flowing on the valves knowing that the medium is for sea water application and the disc material is just a GGG40 that made the disc...
