Hi all:
Drumtraps are allowed in Maine for every fixture, and believe it or not... no vents required if within 10 feet of the vent stack (top floor)... just the way it is up there! The 18" to 24" standpipe is also part of their code.
I know the 18"-24" standpipe drives you and Bob crazy, Tom, but I'm telling you that it works all over where I live. In my area the code says I can run 1.5" pipe with standpipe between 18" and 30"....and I promise you...all the drains work fine!!
Not to get into this too heavy, but I am telling everyone that questions this ever again, that even the fancy newer machines work on an 1.5" drain line with an 18" standpipe. If they don't then it is only because the drain line is clogged by some kind of build up.
I have installed whirlpools, neptunes, all the newer models and not an issue. I keep hearing that some codes want to bump the requirement up to a 3" drain/trap...but yet to see it in writing..anywhere!!
I have had problems with 1.5" drains with 18" standpipes, but when I finally cut the pipe at the cast iron stack (I have never had an issue on PVC pipe) I found a sediment deposit that had to be removed by hammer and screwdriver. After I cleaned all up and installed new fittings all was fine.
Mygirlsdad pointed out fact that cutting the pipe down to 18" probably won't help here much anyway... so swerty2 needs to extend the hose no matter what I think.
I will continue to recommend piping in 2" drain pipe as I think it makes sense (with 30" standpipe)....but code and my experience demonstrate that 1.5" is OK... just that I also agree that 2" is better is all.
Just mentioning facts guys... :)
MARK
