Saturday I winterized my water features pump/circuits. I am going to keep the pool going, but the water features will not be used throughout the winter, so no need to keep that pump going, just so it can cycle on during the freezing weather.
Used the shop vac to blow down the features themselves. When it came time to blow the main drain line out, the shop vac didn't have enough oomph. So I was about ready to pull the trigger on a cyclone blower, when I realized, all I needed was a blower. I have a perfectly good blower already on my equipment pad. It produces plenty of pressure to overcome the head pressure on the main drain line.
So I cobbled together this handy dandy adapter to connect to my pump suction union... and viola! I can use my spa blower to blow out the main drain line! I thnk next year I will plumb in a 3 way valve on the blower line so I can just divert the blower flow through a shop vac hose to blow things down.
--Jeff