How to Handle End Leaks or Outflows in Globe Valve Applications

How to deal with stop valve applications in the inner leakage or leakage: leakage is still a good deal, for the leakage in the flange, the bolt to tighten the flange, if not enough, we must open to see the flange gasket Whether there is damage, for the leakage at the packing, it is necessary to fill the gland. If the packing is too loose, it must be filled. If it is directly on the body, it will leak. If the pressure is low, it can be welded. If it is high pressure, give it up. Safety First, for the endoleak problem, the situation is not well defined. First, it may not be dead, and then it is forced to shut it off. Second, the valve seat seal is damaged. This will require re-grinding. If the valve core is damaged, it depends. The scouring damage is also damaged by the media impact, but both must re-weld the sealing surface.

The inner leakage is generally a damage of the valve seat or the sealing surface of the valve core. This can grind the valve seat or the sealing surface of the valve core, but there is also an special case where the valve stroke may not be set properly if it is electric or pneumatic. Leakage to see where leakage, if the valve body leakage can only change the valve.

Inside leakage should be a problem with the sealing surface. If the sealing surface is treated to see if the effect leaks, the valve is different, the leakage position is different, and the leakage at the packing should be treated differently. If it is tight, or if you replace the packing, we often cannot. Parking is plugged with pressure.

There are many leakage points in the globe valve. In most cases, the leakage is from the gland. If the gland is opened to replace or replace the filler, the gland should be tight and it should not leak. The inner leakage is that the sealing surface on the upper surface of the valve plug is broken, but actual experience tells us that sometimes the inner leakage may have a hard object stuck on the valve core and cause inner leakage. The specific method is to open the valve and then close the valve. , A few times to flush hard things back and forth on it. If it is the valve itself, it is necessary to select the appropriate time to replace the valve.