Some very good information in this thread.
Watching my flow meter lately in the Bahamas
, I don't see too much difference between 700 and 800psi. I had been running below slightly below 800psi, but now will stick to 800 after reading all this.
By the way, I purchased a USED 20gph Cruise
RO unit last year and this summer is the first I have it in operation. The guys at Cruise
RO have been extremely helpful. There are many good RO units on the market, but the Cruise RO units are relatively easy to install since they use a good quality, color coded plastic flexible tubing along with snap-in fittings. This made the plumbing
easy to do myself and made the finished job neat and professional looking.
A couple of things to consider no mater which brand watermaker
you install: 1) Mount the pre-filters in a way that you can open them easily to clean or replace the cartridges (anticipating that you will spill some saltwater) My first location had them mounted above an AC water
pump">raw water pump; not good. 2) Mount the membrane to something structural using some rubber. My first location for the membrane was attached to the underside of a cabin
floor. When the unit was running the floor would resonate. 3) If you plan to carry a spare membrane, get a piece of 3inch PVC pipe and some PVC pipe caps. Glue one cap on the pipe, store the spare membrane in the pipe completely filled with pickling solution then cap the other end. Apparently, Dow's packaging is not sufficient for long term storage
. (Rich at Cruise RO made this suggestion). 4) Carry spare impellers for the pre-pump. The Cruise RO units use a Commercial
Water Puppy Pump. Personally, I have had much better luck with Shurflo pumps. They draw less and don't burn through impellers. Not a big deal, but maybe next year I will replace the Jabsco