Ummmmm, I'd love to stay in the trialer but the P-Vine won't step foot in it an' I ain't into sharin' wives... Kinda funny that way...
Ahhhh, the tank itself is vented, Mick... The toidu and sink are both vented thru a single stack...
Yo leeneia... Al Gore and I invented plumbin' right after we invented the innernet so you don't gotta worry none too much about my credentials... Actually, I been doing plumbin' since back in the days when ya' had to pour cast iron hubs with lead... So not to worry... Heck, last year I replumbed an entire old hotel in Luray and it passed inspection but that's dealin' with real water, you know, the kind that you hook into the town meter... I unnerstand that...
Now, the big question... Will 40 psi suck a garden hose shut... I get that answered an' I can do the rest...
BObert...
p.s. I ain't holdin' nuthin' in, Bruceie... Ain't my style... *grin*