Originally Posted by

**nhmaster**
Flow rate is another concern. I have two 5 gallon containers, one with 1/2" wirsbo and the other with 1/2" Viega pex coming off the bottom. When we pull the plugs at the same time, the Wirsbo side empties in almost 1/2 the time that the Viega side does. Both sides have exactly 6' of pipe with 2 90 degree elbows attached. Watts is even slower. The same set up versus copper, copper wins against them all but not by much over the Wirsbo. Essentially, to get the same flow rates out of 1/2" Viega, Watts or any crimp typed pex, you need to go to 3/4"