A camping forum for VW bus and camper owners.
Thanks for the input. Melissa was sold once she saw that they don't make noise--we have one of those that screws onto the top of a propane bottle, the most ungodly kind, I suspect. I was sold once I saw that they aren't pointlessly expensive.
I used the 12" threaded pieces for the two in my possession. It can be done with regular glue type fittings also.