Long list of answers to a simple question.
A friend from down under had 3 way valve added to the sea water intake and fresh water. On the crossing from Darwin to Indonesia
, he changed from fresh water back to sea water and he did not fully turn the 3 way valve. This means all the 3 hoses were all mixing up.
Upon arriving in Indonesia
, he felt his fresh water tasted a bit funny
. Had to do major cleaning
up on the house tank lol.
My 2 cents worth.
I replaced the manual pump
with a Jabsco electric pump
Scenario 1: Use the shower sump
Result: After a while, the shampoo water smells and the toilet
bowl smells. Don't like the shower
water sitting below the grating anyway.
Scenario 2: Use the sink water.
Result: Had to flush the toilet
each I use the sink to wash or the sink will fill up with water. Too much work
Scenario 3: Replace the sea water with fresh water with a one way valve to fresh water high pressure side.
Result: Flooded the bowl. Problem was high pressure fresh water.
Scenario 4: Plumb to low pressure with a one way valve.
Result: Suck water from toilet bowl back to the high pressure side . I discover this when my clear water filter housing is having strange looking things floating inside. That was more than 2 years ago and no, I did not report the "incident" to the Admiral.
Tried with 2 one way valve. They are all useless!
House water tank -> high pressure pump
-> a valve (to control amount of water) -> solenoid valve connected to the same toilet switch -> anti siphon -> toilet bowl.
This method seems to work
well because the solenoid will open the water supply when flushing
out the bowl. Tried without the valve, there was way too much water rushing into the bowl. The anti-siphon allows air to fill the hose without vacuum to strain the toilet pump.
In future, I might want to put in a 3 way valve to connect back the sea water supply.
Good luck in you project