What were they thinking when they designed the Catalina 22 galley without a drain for the water tank? All RVs have them. They’re essential to keeping the water fresh, make sterilizing and flushing the tank easy enough to actually do from time to time, and prevent biohazard from growing in the tank, supply tubing, and pump like this:
Go to the RV parts store first, not last
So when I set out to replace the bacteria supply tubing, I decided to solve the drain problem at the same time. I couldn’t find anything that would work at West Marine, so I paid a visit to my local RV parts store and picked up a small plastic drain valve and matching nut. The valve has a 3/8″ barb on one side and a 3/4″ threaded nipple on the other. I drilled a 7/8″ hole in the fiberglass sink cutout that’s glued to the bottom of the galley. Not sure what that’s for. The hole needs to be as close to the sink drain tub as possible so that it will also drain into the funnel below. I mounted the valve in the hole and connected the valve to the new fresh water supply tubing with a 3/8″ nylon T.
To open the valve and drain the tank, I simply pull the drawer completely out of the galley, reach into the right side of the galley with my left arm, and feel around to find and open the valve.
The Bottom Line
Suggested price: $0.56
$tingy Sailor cost: $6.42
Savings: $100/doctor visit
How do you empty your fresh water tank at the end of a cruise?