Sealing surface damage can be caused by:
- Scratch of the sphere and / or surface caused by solid particles sandwiched between the ball and the seat ring during the closing process;
- corrosion of the seat ring;
- The seat ring is deformed by overheating.

When opening and closing the valve, apply a force to the arrow indicated on the lever. Do not continue to apply force when the valve arm rests on the stop pin. If the valve does not open and close with the proper closing torque, do not use a lever or similar tool to force the valve to increase the closing torque. This can cause irreversible damage to the valve components.

Note:
Avoid physical application to the ball of the valve without taking precautions to close.
Avoid sudden quick opening to prevent water hammer from appearing in the ball valve.
If the valve is in the closed position for a long time during installation, open and close the valve once a week to prevent the formation of lime and deposits.

Benefits:
- Lightweight
- Self-contained structure
- Short spacing
- Save space
- Easy Installation
- Universal Apps