High-hysteresis sequencing system enabling engagement or disengagement of an additional pump to increase flow rate according to the operating pressure.

Innovative sequence valve design ensuring a transition between two stable states with no intermediate pumping during pressure fluctuations.
Return to the initial state occurs at a very low flow rate, close to 0 L/min.

The system allows a full power utilisation at low and intermediate pressures by significantly increasing the useful flow compared to a standard motor + single pump solution.

Benefits:

• Compact solution with no additional electronics
• Hydraulically stable system (high hysteresis)
• Improved use of motor power at low and intermediate pressures
• Reduced no-load noise due to lower motor speed, resulting from increased motor torque provided by the combination of both pumps