HOW I SOLVED MY SHORE WATER CHECK VALVE RIDDLE
Posted: Thu Oct 17, 2013 1:31 pm
since ENTERPRISE has been used so much these last few months, the shore water has been constantly connected and disconnected. each and every time, within the past 3 weeks, once shore water is hooked up, i get the lowest flow onboard i've ever experienced. the pump puts out a nice steady flow, so at first i thought it was my dockside charcoal filter. disconnected the hose and ran water through the filter, steady and strong. nope, not that. checked the regular hose and other peoples wash down hoses. again, water pressure was strong. so, i suspected it was something boatside. the only thing that i could have thought of was the internal check valve in the shore water inlet on the boat. the unit itself looks a little long in the tooth, so, i took out my black and decker portable compressor and connected it to my city water blow out plug...... this small gem uses compressed air to blow water out of pipes and taps but does not use a lot of pressure (MAKE SURE YOUR TAPS ARE OPEN BEFORE ATTEMPTING THIS). i also use it to force 'pink' through the lines for winterizing.
i turned on the compressor, and the dial read 20lbs of pressure for a brief second then went down to zero. i tried it again and the needle registered zero. that tells me that there wasn't any back pressure pushing against the other side of the check valve. that check valve is used to prevent onboard water from being pushed out the city water inlet when the pump is turned on.
i reconnected the hose to the shore water hookup boatside, left the galley faucet turned to cold, open, and i had a nice steady flow of water. i may replace the boatside hookup in the spring, but, if this will solve the problem, why replace something that will work with a little tweeking.
just thought i'd pass this on since there was a thread about weak water early in the month. this is how i solved my particular problem.
this is the compressor, the connection w/ gauge and the blowout unit. those can be found at any rv supply store for a fraction of what you can get it at a boating store.
aaron
i turned on the compressor, and the dial read 20lbs of pressure for a brief second then went down to zero. i tried it again and the needle registered zero. that tells me that there wasn't any back pressure pushing against the other side of the check valve. that check valve is used to prevent onboard water from being pushed out the city water inlet when the pump is turned on.
i reconnected the hose to the shore water hookup boatside, left the galley faucet turned to cold, open, and i had a nice steady flow of water. i may replace the boatside hookup in the spring, but, if this will solve the problem, why replace something that will work with a little tweeking.
just thought i'd pass this on since there was a thread about weak water early in the month. this is how i solved my particular problem.
this is the compressor, the connection w/ gauge and the blowout unit. those can be found at any rv supply store for a fraction of what you can get it at a boating store.
aaron