Quote Originally Posted by sweet spot maple addict View Post
Passive recirculation or poor,s man recirculation as sometimes described on the post , is plumbing a recirculation loop outside of the pressure loop ( tee,s out after the valve and tee's in before the pump) i understand it offers the advantages of a standard brix coming out at a given flow. And reduces fouling : what is recirculated is already filtered , and the flow of the recirculation is not restricted by the filter. It also contibute to a more uniform sugar gradient along the membrane.
Recirculation like the memprotec are plumbed inside the pressure loop ( tee,s out before the valve, and tee,s in after the pump) As i understand it the high volume pump is different than a positive displacement pump (procon) . The objective of this high volume pump is not to provide pressure , since it is plumbed inside the loop already pressurized by the procon, but indeed to provide higher velocity which translate in high flow and increase "laminar flow" that greatly reduces fouling.
So i guess the question is, is it worth it to plumb in the extra procon I have that only makes 125gph. "worth it" as in keeping the membranes cleaner, or should i not worry about it unless i have a pump with a higher flow rate.