Partially Winterizing Fresh Water System

[bbwhitejr]

I want to partially winterize my freshwater system and I need some validation of my idea or other suggestions. I want to remove water from the anchor locker line, transom locker line, transom shower, and the washer/dryer supply lines.

I have a water manifold and a “key” to turn each small valve off/on for each line. If I just cut off the valves going to the lines I want to drain and then open the spigots, I am afraid they will not drain due to forming a vacuum. My thought is to hook up an air compressor with low pressure, open one outlet at a time and remove all water from the freshwater system. Then close the valves to the lines I do not want water in before turning the water back on.

Thoughts/suggestions?

Thanks,
Bennett

 

[doozie]

I want to partially winterize my freshwater system and I need some validation of my idea or other suggestions. I want to remove water from the anchor locker line, transom locker line, transom shower, and the washer/dryer supply lines.

I have a water manifold and a “key” to turn each small valve off/on for each line. If I just cut off the valves going to the lines I want to drain and then open the spigots, I am afraid they will not drain due to forming a vacuum. My thought is to hook up an air compressor with low pressure, open one outlet at a time and remove all water from the freshwater system. Then close the valves to the lines I do not want water in before turning the water back on.

Thoughts/suggestions?

Thanks,
Bennett

I have used air for years, never an issue and we get a little colder than you. If you have a hot water bypass that makes it easy

 

[fred castner68]

I have a 280 sundancer 1989 and I am in the process of winterization of the water systems, A/C cooling,hot water, and toilet sea water inlet. On the hull I have one fresh water pick up and 1 sea port for the holding tank. Does the inlet serve both the toilet and A/C ?

 

[importmonkey]

Why not close the lines you don't need to drain, open the ones you want to drain, force air through the system, close the empty lines, then open the full lines?