Home Made black water tank

[Wavery]

This is the vent:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

It works really well. It's important to have a good sized vent so that when you pull the handle to dump, air replaces the volume that is evacuating the tank at a rapid rate and no vacuum occurs inside the tank. That gives you a nice clean "Dump". Another trick is to have someone hold down the flush pedal on the toilet while you open the gate valve outside.

[Deb Mac]

“No longer available”. I found a straight vent that might work out if I use a flexible enough tube - I am using silicone. I’ll see if I can work with the straight one.

I also considered trying something along the lines of a battery box vent and use a 1” tube. Still thinking about that. Or teach one of the dogs to flush the toilet

[Deb Mac]

Unfortunately, I already have my hole drilled and the 1/2” valve in the wall. However, I have tracked down a 3/4” one on amazon (never showed up before) as well as a 1” one on eBay. I have both coming. I’ll see which one is easier to retrofit.

[Wavery]

Before you drill a hole for the 1" vent, be sure that you can find 1" hose. 1" is hard to come by.

[Deb Mac]

No worries 👍

[Bill]

Is that the one where they run a piece of PVC pipe from the black tank, through the bathroom wall into the space under the kitchen sink, and then run a length of dryer hose upward along the interior wall above the sink, to a vent fitting through the roof? I never liked the idea of running a bathroom vent hose above the food prep area or the clean dishes that I just washed. It was code-compliant, but as you say, not very attractive. On the other hand, I couldn't think of a better way.

Bill