Operation of JOLLY PUMP25 is extremely
– When a shower tap is turned on, as soon as
the water flow in the pipe exceedes 3 l/min it is
diverted by the unit’s internal flow control valve,
causing the motor start. The resulting increased
flow is supplied constantly until the tap is turned
– When a tap is turned off, the interruption of
the water flow causes the motor to stop immediately.
This prevents potentially harmful pressure
rises in the water circuit.
The same principle assures dry run protection of
the pump which stops immediately in the absence