comfun1
New Member
I am building a new house and wish to put in a home run system using a manabloc manifold. I am planning on using 3/8" pex to all fixtures except tub/showers and sill cocks, which will be 1/2". I do not find local supply houses stocking 3/8" and several plumbers say 3/8" is to small. The following company, http://www.mvsupply.biz/index.htm is a large supplier of pex and pex related supplies. According to them 3/8" is the way to go. Why is there this difference of opinions? Is this so new that the majority of plumbers are unwilling to change? I see the home run system in some cities but I don't think they are using anything smaller than 1/2". The advantage of the 3/8" is the speed at which the hot water gets to the fixture. The fixtures served by the 3/8" use less than 2 1/2 gpm, so what's wrong with this? Is Mountain View Supply wrong?