|Each pumping period ends when the control unit receives a signal that sufficient pressure has been reached at the furthest end or where there is the greatest restriction in the grease feed lines. In Assalub's dual-line system, a pressure transducer or a pressure switch is fitted to each main line. They are mounted between the base plate and the last dispensing valve. The output signal of the pressure transducer is 4-20 mA corresponding to a pressure of 0-25 MPa (0-3,600 psi). The kit includes screws for mounting of the dispensing valve and pressure transducer/pressure switch unit to the base plate.