Hi All,
I recently completed a dedicated gravity hot water re-circulation loop in my house. As part of the build I had installed a PVC non spring flapper check valve in the line. It was working perfectly. We went from 3-4 minutes hot water at the kitchen sink to less than 10 seconds.
Then after a week or so I found out that I should not be using PVC in potable water lines. So I bought a brass flapper check valve at Home Depot and immediately started having cold water in my hot water line. It was most evident while taking a shower. By simply shutting off the loop (inline ball valve right before entering the bottom of the hot water heater) the hot water would return.
My guess is the brass check valve is staying open and allowing water from the bottom of the hot water heater to be pulled into the hot water line.
Please help me figure out a check valve that will work. Thank you!
See pictures below:
I recently completed a dedicated gravity hot water re-circulation loop in my house. As part of the build I had installed a PVC non spring flapper check valve in the line. It was working perfectly. We went from 3-4 minutes hot water at the kitchen sink to less than 10 seconds.
Then after a week or so I found out that I should not be using PVC in potable water lines. So I bought a brass flapper check valve at Home Depot and immediately started having cold water in my hot water line. It was most evident while taking a shower. By simply shutting off the loop (inline ball valve right before entering the bottom of the hot water heater) the hot water would return.
My guess is the brass check valve is staying open and allowing water from the bottom of the hot water heater to be pulled into the hot water line.
Please help me figure out a check valve that will work. Thank you!
See pictures below: