Jason Garrison
12-12-2012, 10:05 AM
I have read through the article posted but not sure how to proceed: TPR Valves and Discharge Piping - InterNACHI (http://www.nachi.org/tpr-valves-discharge-piping.htm)
We have an older house (built 1977) with a gas water heater located inside a raised cabinet in a two-car garage. Looking at the TPR valve, there is flexible copper pipe connecting one end of the TPR valve and the other end is connected to regular SCH40 PVC. The flex pipe was connected to a threaded connector with piping hidden behind drywall. I actually had to open the drywall to determine the piping type. Everything I have been reading indicates it should be connected to CPVC but the issue I have is that the existing PVC drops straight down and then 90 degrees outside the span of the garage so I cannot access all of the PVC piping to replace it.
Was is the proper way to resolve this? The length of the flexible copper pipe is roughly two feet.
/EDIT
Doing a little more searching, the post in this thread (http://www.inspectionnews.net/home_inspection/questions-home-owners-home-buyers-diy/29493-water-heater-t-p-drainage-line.html#post191809) appears to be a solution. I didn't think I could drain directly into the garage and would like to be able to drain to outside. Can I then do a copper pipe w/6" gap into a collector that feeds the existing PVC piping to the outside?
We have an older house (built 1977) with a gas water heater located inside a raised cabinet in a two-car garage. Looking at the TPR valve, there is flexible copper pipe connecting one end of the TPR valve and the other end is connected to regular SCH40 PVC. The flex pipe was connected to a threaded connector with piping hidden behind drywall. I actually had to open the drywall to determine the piping type. Everything I have been reading indicates it should be connected to CPVC but the issue I have is that the existing PVC drops straight down and then 90 degrees outside the span of the garage so I cannot access all of the PVC piping to replace it.
Was is the proper way to resolve this? The length of the flexible copper pipe is roughly two feet.
/EDIT
Doing a little more searching, the post in this thread (http://www.inspectionnews.net/home_inspection/questions-home-owners-home-buyers-diy/29493-water-heater-t-p-drainage-line.html#post191809) appears to be a solution. I didn't think I could drain directly into the garage and would like to be able to drain to outside. Can I then do a copper pipe w/6" gap into a collector that feeds the existing PVC piping to the outside?