preventing sewer line back up in your home is important so today we're in larkspur with diamond certified expert contributor miles o Dwyer a pipe spy ring to learn how you can prevent this homeowners that are experiencing sewer line problems frequently find out about it when that sewer line is backed up inside the house that could be in their shower pan it could be in their bathtub or heaven forbid that it is already escaped one of those two devices and traveled all over their floor so there are opportunities to prevent that from happening one of them is what we refer to as the Contra Costa valve which I'm holding here in my hand these are placed on the pipe outside of the house and they are installed a level that is lower than the lowest fixture in the house so what happens when the piper backs up this little ball that you can see here in the pipe let's see move it around right there which normally sits on top of the the bottom of this device and keeps the sewer gases inside the pipe so you don't have to smell them moves up with the pressure of the water and out of the way and allows the water to escape outside and onto the ground outside the house where it can be much more easily taken care of there's an alternative to the Contra Costa valve which I just showed you contra costa val is quite noticeable and if you're in a situation like your patio where you're not as interested and having everyone see it we recommend the installation of what is called a popper it has the same effect it pops up when the water pressure pushes on the bottom but we can install it in a manner that is even with the surrounding ground such that it is not visible to the eye in the same manner as the Contra Costa valve to learn more from local top-rated companies visit our diamond certified expert reports at experts Diamond Certified org