JRTJH -
I agree.
Should actually be fairly simple. Put a test guage on it and run it up to around 30 pounds. I can't foresee the black tank building more than one atmosphere pressure. Probably if it did, I would have more problems than a wet transfer switch!
Ron
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2011 Alpine 3640RL (Beauty)
(Gone! Now replaced by Beauty3)
2016 Ford F-450 (The Beast)
Diesel 4x4, DRW, LB, CC
Comfort Ride Hitch