i must admit i am a little confused as well. from what i know, the mach V pump is a high end marine water system pump for yachts. not that our coaches are not land yachts, but i dont know of any other of our coaches that have one of these on it.
most of us have shur flo pumps on our coaches. like, michael and richard, i have two of them. one as primary and one a backup. i am in singapore on biz, and would get the model number if i was home but i believe they are at most 100 bucks a piece and likely alot cheaper on ebay.
so, thats what i would put in because that is what we all have already.
now if your coach is quite new one, it could be for some reason you need the more expensive one but i cant think what it would be.
they are easy to put in with flex tubing.
the shur flo is a 12v pump and the searching i did on the mach V showed them to be 110v pumps, but i would have to believe you have a 12v pump as well.
my two cents worth
tom
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