Lewmar 2019

266/267 7. Hydraulics Valves ▪ ▪ Simple on-off or fully proportional control is available ▪ ▪ Valves can control pressure ranges up to 350 bar (5000 psi) ▪ ▪ In the case of specialist hydraulic functions a custom designed valve manifold can be supplied. Generator Drive If the generator can provide sufficient usable power, this is an excellent way of achieving thrust without disturbing the main engine. The major generator manufacturers can provide a clutched PTO output if specified. Lewmar can then match a pump to suit.The advantage of this system is that the generator runs at a constant high RPM, so the pump size can be smaller for the same horsepower. No speed trip is required, as the RPM is constant. Gearbox Drive Some gearbox manufacturers can provide a PTO output if specified. Some are clutched and some are direct coupled. Again, with careful consultation we can provide a pump drive to suit. Even without a clutch we can provide a speed sensor that will allow the pump to run at standby if the RPM are too low or too high.