Mental seat butterfly valve six protective measures

The following are six protective measures for mental seat butterfly valves:

1, the bolt welded on the valve disc should not be too long, otherwise it will be too long and hold the valve body internal flow channel, resulting in the sealing surface being "overhead", can not play a sealing role; When assembling, attention should be paid to checking and adjusting the opening of the lead screw to ensure that the sealing surface can be tightly engaged.

2, choose the appropriate adjustment pad, the thickness of the liner should be slightly lower than or equal to the height of the valve disc sealing surface step, so that the soft sealing pad and the valve disc sealing surface are closely fitted, in the same plane.

3, In order to prevent the compression nut from falling off, the nut should be properly anti-loose after tightening.

4, should consider the use of fluid medium conditions, choose a soft gasket suitable for the requirements of the medium, so as to avoid the use of medium corrosion or high temperature deformation.

5, when the sealing surface of the seat is seriously damaged, the seat can be scrapped, and the spool can continue to be used with the seat of the same specification after improvement.

6, adjust the valve should be marked to avoid fierce opening and closing, so as not to affect the service life of the gasket.