We have a Beneteau
361 with a Jabsco
and a holding tank
above and behind the head
. This means there is about 3+ ft. of vertical discharge hose between the head and the top of the tank. We always use fresh water
to flush. I replaced the joker valve, but encountered back flow into the bowl just a few weeks later. I have since replaced the entire pump mechanism as well as the flapper valve at the base (nearly as cheap
as a overhaul
kit, w/o the overhaul!), but still have back flow into the bowl.
Since we always use fresh water
, do we have to worry about calcium deposits, acid flushes, etc, or is this just the weight of the water in the discharge hose overwhelming the valves? Other than a ball valve, which I would like to avoid, is there anything we can do?
Even if we pump enough times to clear the hose, the backflow water is often blackish (from the rubber hose, I assume), but with no odor
to speak of. Is there a discharge hose that won't discolor the water, even if it does back flow some?