|Posted: May 02 2011 at 02:04 | IP Logged
Notes from my experience which may be helpful:
When we purchased the wife's 381, it had no shore water connection, the tank being the only freshwater source. As the wife planned to stay on the boat 3 or 4 days a week, we had the local marina plumb in a shore water connection which they TEE'ed into the main water line downstream from the fresh water pump. Even with a pressure regulator (which have been known to fail; 1 out of 2 so far) on the shore water intake line, I did not want the pump or tank to see much more than gravity pressure so I installed a check valve immediately downstream of the fresh water pump for the on-board water system. This prevents any pressure from the shore water system from reaching the pump, tank, or any other parts of the system upstream from the check valve.
As the shore water connection was not installed by CC, neither was the diverter valve noted by Captain Shover; I am going to look into that as the shore water outlets freeze from time to time during the winter around here.
Hope this is of some help.
1984 381 Catalina