Building standpipe tank:
I puzzled over getting that coupling,
labled part I at the CBT site, on the pipe nipple, since I had only cut a 2" hose on the top (bottom) of the tank to lower the bubbling stone in, and could not put my hand inside. But then I did this:
I took the 2" bushing, and on the outside of the tank side of it I threaded in my 1 1/2" nipple. Onthe inside part of it I threaded in my 8" nipple, and voilaq, thread the bushing into the 2" port, thread another 1 1/2 bushing into the 3/4 port and there you have a closed top, 5 minute wash tank?
Is there something I ammissing here?