Sanitary Diaphragm Valve Opening operation:

First, make sure that the upstream and downstream valves are closed to avoid damage to the diaphragm caused by instantaneous high pressure.
Then slowly open the diaphragm valve, pay attention to the opening state of the valve, and ensure that it is fully open.

Closing operation:

When the diaphragm valve needs to be closed, the handwheel (or operating handle) should be slowly rotated until the valve is completely closed.
Make sure that the operating handle is in the fully closed position and cannot be in a half-open or half-closed state.