I am not sure the low pressure LP gas from your trailer's connector is sufficient to power your regular gas grill--unless your regular grill uses 1 lb. bottles rather than 5 lb. or larger tanks. The following is from the website for RVQ Grills (which are designed specifically for use with travel trailers that have low pressure connectors:
2. Can I hook my gas grill that I purchased at Lowes, etc. (Char-Broil, Weber, Coleman, etc.) to the gas line on my RV?
No, gas grills such as Char-broil, Coleman, and Weber brands use hi-pressure valves. RV gas lines are plumbed for low-pressure.
The RVQ II uses a special converter so that you can use it with your on-board gas on your Recreational Vehicle. We also offer a hook-up that allows you to use a propane tank if you want to take your RVQ II on a trip without your RV.
3. Can I hook my RVQ II Grill up to the 1 lb propane bottles to make it more portable?
You can hook your RVQ II up to the 1lb screw-on bottles. We also have a hose kit that allows you to use the 20 and 30 lb bottles
So, Dave, it appears that the gas connector on your trailer is intended for use with special gas grills that operate on low pressure. I do not know if there are any adaptors that boost low pressure LP from the trailer to the high pressure needed by most commercial gas grills. This is a link to the low pressure hoses with quick connect couplers that are available from the RVQ website: http://www.rvqgrill.com/cart/Category.asp?cid=2
Maybe someone else knows more about high pressure vs low pressure LP gas and can provide additional information.
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