We are in the process of down-sizing our life style and will be having a new tiny home built by a Mennonite group. In keeping with their normal construction techniques I suspect it will be tight to a fault and pressure differences might become a problem. Our one saving grace is t hat we are also having a new lagoon built so that sewer gasses will not add to the situation. I am also doing the plumbing myself on-sight and will install the main vent as close to the final outlet as possible to try and achieve pressure balance. It would be impractical to install a vent at each drain and then tie them all together at a common point, although this would be the better solution. My main concerns are the washer and the walk-in tub, which can both expel water at a high rate. Since all of the plumbing will be installed within the floor joist space, later corrections will be impossible.
Hi Jan,
I was hoping that Dale of someone else more familiar with plumbing issues would comment.
Those "Oatey" vents, and other "air admission" vents, are designed to help avoid a situation where a negative pressure in the drain pipes could cause the water to be pulled out of the trap, allowing sewer gas to enter the living space. These vents can only let air in. They don't really replace the need for a vent to the outside.
Clogging issues are just as likely to be caused by pressure building up ahead of the waste flow. This is often indicated by wastewater backing up through other fixtures. An air admission valve will do nothing to help in that case.
My 2cents worth
John Grube
Posted by: Dale Schoepflin <dalu@hbcomm.net>
| Reply via web post | • | Reply to sender | • | Reply to group | • | Start a New Topic | • | Messages in this topic (3) |
No comments:
Post a Comment