PRM Trolling Valve

For PRM Gearboxes
The PRM Trolling Valve enables low propeller speeds to be obtained by the use of an electrically controlled proportional valve reducing the clutch pressure.  The trolling valve operates upto a maximum engine speed of 1200 rpm.
The trolling valve is available for the PRM260/500/750/1000/1500 and can also be supplied as a retro fit kit.
The trolling valve kit comprises:
  • Trolling valve.
  • Operating joystick.
  • Connecting electrical cables.
  • Mounting brackets.
  • Pipework.
  • ON/OFF switch and filter.
The trolling valve operates as follows:

Depressing the ON/OFF switch causes the hydraulic oil to flow through the pressure reducing valve and by varying the position of the control lever the clutch pressure is increased or decreased with an associated increase or decrease in clutch slip.
Movement of the control lever only affects clutch pressure when the ON/Off switch is activated and ensures the unit is failsafe in the event of an electrical failure.
 
During trolling the head of the switch is illuminated to give a visual indication of the valve status.
 
An interlock facility is provided in the form of an electrical connection which can be wired to a microswitch on the fuel rack to switch off the trolling circuit if the engine speed rises above 1200 rpm.

 

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Noss Marina,  Bridge Road,  Kingswear, Dartmouth,  Devon,  TQ6 0EA
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