Good to know!
How does the Raritan head deal with the problem?
I was looking for a way not to have to install a separate
water tank.
They deal with it in this toilet the same way toilet mfrs deal with it in electric toilets designed to use pressurized fresh water--a built-in vacuum breaker and water valve.
But you wouldn't have to install a separate water tank to eliminate sea water odor problems anyway...There's a very simple--and CHEAP!!--solution that's been discussed a bunch of times in this forum. Search the archives for "flush water odor" or "intake odor" etc...you'll find it. Greatest idea since the automatic bread slicer IMO.
And to add to a comment Woody made:
"bacteria does not know what a check valve is ...it will go back to the fresh water holding tank and then the fun begins.....death by check valve if you drink from your fresh water supply."
NEVER connect any toilet, manual or electric, that's designed to use "raw" (sea, lake river) water to the potable water system...it cannot be done without risk of contaminating the potable water supply, damage to the toilet, or both. "But we never drink water from our tanks" you argue. You "drink" a lot more of it than you realize...you wash your hands, then pick up a sandwich...wash dishes in it...rinse out a cup, then pour your "pure" bottled water into that cup...brush your teeth, wash your face, shower--impossible to do without getting ANY water into your mouth, even just off your lips... I could go on, but you get the idea.
Raw water toilets are designed to PULL water through the pump...toilets that use fresh water are designed to use pressurized water, which pressure PUSHES through the pump. Pushing water through a pump that's designed to pull water through it will mess with seal and o-ring alignment out of whack in the pump.
Using the shower head isn't good for the pump either...because bowl contents on go through the bottom part of the pump, leaving most of the pump dry, which is very hard on the seals o-rings etc, drastically shortens their life unless you're really meticulous about making sure the pump is always well-lubricated. It's an even worse idea if you have an electric toilet, 'cuz cutting off the flush water intake to an electric toilet will totally "fry" the intake impeller...the toilet will no longer be able to pull in any flush water if you ever need to.
