Finally, here's a bill of materials. I got all the parts at Home Depot. The hose component is not rated for high pressure so be careful, but then again I use a relatively low pressure on the compressor to blow out the water.
No problem, I know it has made my life a lot easier the past few years. My brother gave me the idea as he has something similar for blowing out his RV. I used to use a rag around the blower and hold it as tight as possible. Then I would also need a second person to go turn valves on and off. This way I can do it all myself and take as long as I wish to get it done right.