Hydraulic constant running pumps also called hydraulic power packs are suitable for larger boats with hydraulic steering systems. They are used for connecting autopilots to the steering system as well as for joystick steering. They have a constant running pump and two solenoids for starboard and port side steering. Can be used with all our autopilots, also the latest model of AP47. Note that even if it’s called a constant running pump it’s easy to set it up so that it only runs when needed by the autopilot.
We have constant running pumps with flow rates from 0.5 litre/min to 12 litre/min with 12, 24 and 220/380 volt systems. There are also two-speed systems with 4 solenoid which are used for having one speed for autopilots and one other faster speed for joystick steering.
When you order a constant running pump you need to know the flow rate of the pump and at what pressure you need this. The flow rate you know from the volume of the cylinder and the hard over time. For an autopilot you need a hard over time of about 12 seconds, for joystick steering around 6 seconds. Pressure for autopilot use is about 50 – 60 bar and for joystick about 80 – 100 bar (max 80 bar for aluminium cylinders). With the flow rate and pressure we can calculate what power in Watt you need. If you have any problem with this allow us to do the calculations for you.
|Constant running pumps (all prices excl. VAT)|
|Model||Power W||Voltage V||Price Euro|
|Optional extras (all prices incl. VAT)|
|Two speed *||475|
|* Two speed means a constant running pump with two sets of solenoids. With that you can get a higher flow for joystick and a slower flow for an autopilot for example. The price is the added price for one extra set of solenoid. Note that the pump has to be dimensioned for the higher flow rate.|