reefnetworth
Premium Member
how do they work?
which one is better?
TIA
which one is better?
TIA
RO/DI flush kit ?
- Thread starter reefnetworth
- Start date
reefnetworth
Premium Member
thanx, Tc269! :thumbsup:
reefergeorge
New member
Backwards, Really??
The ones I usually see just don't restrict the waste line.
The ones I usually see just don't restrict the waste line.
AZDesertRat
In Memoriam
No that is incorrect. All they do is run water around the exterior of the membrane at a higher velocity than the normal 4:1 waste ratio. They do not run water backwards through the membrane.
Flush kits have not been proven to do anyting at all. The problems are that once dissolved solids have been allowed to collect and solidify on the membranes surface no amount of flushing in the world will even break them up and move them out. For a flush kit to have any benefit whatsoever it must be used every time you shut the unit off starting with day one and forever from then on. If you have a RO membrane with an autoshutoff valve and float switch you do not know when the units starts and stops so its a waste of money. Large commercial systems get around this by using chemical treatments but small household systems are not set up for clean in place like that.
The best thing you can possible do is make darn sure your waste ratio is set at 4:1 and it stays there. Units that come with cartridge type fixed orfice flow restrictors are often not even close. Time your waste using a measuring cup and watch and if its not at 4:1 do yourself a favor and buy either a capillary tube type flow restrictor that you personally trim for an exact fit and flow or buy an adjsutable one and set the needle valve to 4:1 or both.
Flush kits have not been proven to do anyting at all. The problems are that once dissolved solids have been allowed to collect and solidify on the membranes surface no amount of flushing in the world will even break them up and move them out. For a flush kit to have any benefit whatsoever it must be used every time you shut the unit off starting with day one and forever from then on. If you have a RO membrane with an autoshutoff valve and float switch you do not know when the units starts and stops so its a waste of money. Large commercial systems get around this by using chemical treatments but small household systems are not set up for clean in place like that.
The best thing you can possible do is make darn sure your waste ratio is set at 4:1 and it stays there. Units that come with cartridge type fixed orfice flow restrictors are often not even close. Time your waste using a measuring cup and watch and if its not at 4:1 do yourself a favor and buy either a capillary tube type flow restrictor that you personally trim for an exact fit and flow or buy an adjsutable one and set the needle valve to 4:1 or both.
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