They perform the function of automatic control of pressure energy levels by acting on the power supply of the electric pump. They are previously calibrated at standard closing and opening contact pressures, but can be calibrated at different pressures thanks to their adjustment device.
They perform the function of automatic control of pressure energy levels by acting on the power supply of the electric pump. They are previously calibrated at standard closing and opening contact pressures, but can be calibrated at different pressures thanks to their adjustment device.