Hello, my name is Rick and this is my first major DIY project and my first post to this forum.
I just installed a new bathtub as part of a full bathroom renovation. While draining the tub after a leak test I was surprised by the amount of noise coming out of the overflow opening. I did some research on this and other plumbing sites, and it seems the most likely cause is improper venting. The thing is, I installed a dedicated vent for this bathtub following all the guidelines specified in my DIY pluming books and the 2009 International Plumbing Code, which my state and county uses for it's local plumbing codes. All waste and vent tubing is 1 1/2" PVC and the distance from the trap to the vent is about about 14". While the tub was draining I put a piece of plastic over the overflow opening to see if it was perhaps sucking air and found no air was being pulled into the overflow. I would think that if the drain were starved for air it would try and suck it down the overflow. So I'm really confused about why it's making all that racket when it drains. Any thoughts?
-rick
I just installed a new bathtub as part of a full bathroom renovation. While draining the tub after a leak test I was surprised by the amount of noise coming out of the overflow opening. I did some research on this and other plumbing sites, and it seems the most likely cause is improper venting. The thing is, I installed a dedicated vent for this bathtub following all the guidelines specified in my DIY pluming books and the 2009 International Plumbing Code, which my state and county uses for it's local plumbing codes. All waste and vent tubing is 1 1/2" PVC and the distance from the trap to the vent is about about 14". While the tub was draining I put a piece of plastic over the overflow opening to see if it was perhaps sucking air and found no air was being pulled into the overflow. I would think that if the drain were starved for air it would try and suck it down the overflow. So I'm really confused about why it's making all that racket when it drains. Any thoughts?
-rick