Air Conditioner A coil drain
My A/C drain line was about plugged up with decade of dust and debris. Tried to blow it out with garden hose but back flow wouldn't build up enough pressure to wash it out without backing up to almost the A coil drain pan.
So, I got 3/4" Wye (3 way) connector fitting, 2 foot of straight pipe, couple straight connectors, elbow connector, Garden hose nipple, and ball valve to seal off the drain so it would pressurize with 60 Psi water pressure.
After assemble, ) Didn't have to glue most of the joints, they fit tight enough to hold 50 to 60 PSI water pressure.) Hooked the water hose up and pressurized the Drain tubing that runs under the garage and outside the house. It worked, blow out the clog or near clog. The ball valve sealed off the drain tube below the A Coil. that allowed water pressure to build up and blow the drain line out.
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