Almost finished... plumbing question

[Jody]

Our bus is almost ready to take camping. Interior paint, carpet, bunkbeds built, seating, fridge, wiring, sink, finished exterior painting at about midnight last night...

My plumbing consists of an inlet on the side of the bus for campground connection, leading to the supply line for the sink. The sink drain passes through a neat hole to beneath the bus...

I found a deal on a 46 gallon gray water tank, bought all the plumbing for dumping...

and realized that the system will need a vent. besides the vent in the drain from the sink to the tank... the tank will need a vent as well. Is that right?

[the_experience03]

Yes....that is unless you like nashty smells and trouble getting the water down. I still have to tackle that problem with my grey tank. I take it you don't have a fresh tank then? I'm working on my plumbing right now so I feel your pain. I'll try and post some pics tomorrow of my overly engineered system. No water pump yet I get 20 psi out of the water lines Now I just need a regulator that works and I need to seal the darn leaks.