Manufactured housing and RVs only
Automatic anti-siphon trap vent used as secondary venting
Must be located at least 60" above trap arm
Two individually protected fixtures may be connected to same 1 1/2" drain
Three or more fixtures must be drained by 2' line
Simply hand tighten, no thread seal needed
Water closet must have main stack to outside
Must be installed in accessible location with free flow air
Do not install in sealed wall cavity
1-1/2" MPT threads