09-30-2014, 08:00 PM
Agree in part with your comment regarding the accumulator. If you open multiple faucets at the same time you can required more water volume than a single pump can provide causing a pressure drop that the accumulator can't take care of resulting in pulsing... The second pump provides the additional volume required to maintain the pressure....Had a discussion w/Tiara engineering regarding this when I took ownership of my boat (sea trial question why 2 fresh water pumps)...
