Browse Forums General Discussion Building Standards; Getting It Right! It's all good. You can get both wye piece and the coupling with or without thread. The cost difference is negligible and means the plumber only has to carry the single… 1 4960 Joe, it depends on your certifier but we are noticing the ones we deal with are really cracking down. So i would recommend you follow your approved landscaping plans to… 4 11089 |