Re: New plumbing, old house, lower pressure
Where the PVC starts, what was the original size of the copper? The main coming to the house is always larger than what the house is plumbed with, so it is not unusual to see a size reduction after the main shut off at the house. If the main feeder throughout the house is 3/4" and then branches to 1/2" to feed fixtures, that is also normal, as this provides adequate volume to all areas, and the reduction maintains pressure at the point of use.
Originally Posted by rakes
My suspicion is that the supply was necked down at the water heater or water conditioner. Either of those would result in a significant difference in overall house pressure.
Pipe diameters are measured on the inside, or inner diameter (I.D. ), not the outside dimension, which means that a 1/2" pipe is a 1/2" inner diameter pipe, regardless of the material it's made of.
Originally Posted by johnjh2o
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!