THEORY OF OPERATION

           Most major leaks or hull ruptures occur while the vessel is under way.  It is logical to utilize the tremendous power of the drive system for pumping in the event of such an emergency.  It is imperative that an emergency pumping system be always ready and thus as maintenance free as possible.

          The Fast Flow Emergency Pump System meets all of the above requirements by attaching the pump's impeller directly to the vessel's existing propeller shaft.  The impeller is installed on the shaft in a spaced, non-contacting relationship with the housing.   Because the pump impeller has no contact with the pump housing it should not create any electroloysis problems. 

          When the vessel's propeller shaft is turning and the vessel begins to take on more water than the bilge pumps can remove, the Fast Flow pump automatically primes itself and begins pumping within seconds of the time that the water enters the pump inlets.

          The Fast Flow pump can potentially save the vessel - or at least buy valuable time until help arrives or the leak source is found and repairs made.   

          The Fast Flow pump is permanently installed; and it is in operation any time the propeller shaft is turning.   With a shaft turning approximately 600 to 3000 RPM on a five foot head, the Fast Flow  3 inch model can pump roughly 50,000 gallons per hour, or 900 gallons per minute!   The higher the RPM of the boat shaft, the more it will pump. 

The Fast Flow pump is  "Life Insurance for your Boat".

            Under normal operating conditions, the Fast Flow pump acts as a ventilator fan, using a fraction of available engine power.  Under engine compartment flooding conditions, the Fast Flow pump automatically primes itself and begins pumping.  It continues to pump without any action on the part of the crew as long as the propeller shaft is turning.

          The Fast Flow pump is frictionless and theoretically maintenance free because it technically has no moving parts.    The pump has no seals, gaskets, gears, belts, pulleys, valves, switches, rubber impeller, bearings, or electrical devices, and requires absolutely no lubrication.   In addition, there is no heat build-up and no filters to clog.  The impeller is factory balanced and shaped like a harmonic balancer; it should not create shaft vibration problems for the vessel.  The Fast Flow system should be checked periodically to make certain that it is functioning properly.

          Simple in design, the Fast Flow pump once installed, provides extra protection for years, and may even out-last the vessel.