Dang, I just did the EXACT same thing to my compressor tank! I had replaced the old drain twice, and finally wanted to do it ONCE AND FOR ALL, and installed a 90º fitting, a short piece of straight pipe, and a 1/4" pipe ball valve. Works GREAT. I'll just crank it for an instant from time to time and blow a bunch of moisture out, as it's amazing how much builds up in there.

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66 Mustang, Toploader 4-speed
Pump Gas 306, 10.157@133.68
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