Remove the plug from the knob.
If water drips continuously from the port, the
check valve has to be cleaned or replaced.
Exchange of the check valve:
To replace the check valve, turn the stop
valve's knob anti-clockwise up to the stop.
Remove the cap on the opposite side.
The cap also serves as a tool to disassemble
the check valve.
Press the cap with the upper side downwards
onto the check valve's axis.
Unscrew the check valve anti-clockwise from
the body and replace it.
Assembly in reversed order.
7