Here's my history
with this head
. I changed out the hose from the head
to the storage
tank about 5 years ago(bought the boat 7 years ago) when my wife could smell the odors. Used the white hose that is made for the system. It runs along the bottom of my forward storage
locker and then goes vertical about 4 feet, and crosses the top of the tank. Total length is about 10 feet. I've looked to see if there is any way to shorten the run and there doesn't appear to be. I re-plumbed the system to fresh water
about the same time, installing a back flow preventer in the line(so far so good).
In the beginning, it worked just fine and I got a decent use out of the valves but as time goes by, it gets less and less. In May, I checked the tanks
vent and the hose to the vent and all was clear. When I flush, I can hear the material flowing into the tank so the line should be clear. Even though I am set up for fresh water
, I still put in vinegar for what ever build up might occur and oil
to keep the movable parts
I typically pump the waste out of the bowl and then flip the switch to the left and fill the bowl with fresh water and then flip the switch to the right and pump it all our giving plenty of pumps to make sure everything is long gone. I've tried hard pumps and soft pump and still the problem comes back. Some times, after pumping out what came back back out, it stays out and some times it comes back again. In the end, I suck out what is left in the bowl(now mostly water after lots of fresh water pumps) and change out the valve. I've looked at the valves once they come out and I can just barely see light coming in but nothing like the Jabsco
video shows and sometimes I don't see any light but I change out the valves any way. As I said in my earlier post, this valve lasted 3.5 months and about 6 uses before going bad. I'm just glad I came back from the US with 5 more valves. At this rate, they should last me til nest year.