I just built this yesterday. Mine was $4+, because I bought 12 ft. of 3/8 tubing. I currently use my bottle filler on the priming branch, as it is self sealing, and I couldn't get a checkvalve at Lowe's.
I tested it on a sinkfull of water, transferring to a pot on the floor. I pinched the outlet, sucked on my bottle filler until the water passed the t, and it worked like a charm! I had a good, strong stream, with no hassle and no loss of pressure.
Flyguy, you are becoming my go-to source for great, useful, practical, affordable DIY projects. I salute you.
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