best air admittance valve mobile home kitchen sink
Before testing this, I didn’t realize how much a bad air admittance valve could cause sewer odors and drainage issues. During my hands-on work, I found that many products either leak, are hard to install, or don’t meet code standards. But the Oatey Sure-Vent 1-1/2-2 in. 160 Branch & 24 Stack DFU Valve truly stood … Read more