Since the WeberQ grills do not have a single assembly LP hookup and burner control, it is technically possible to remove the regulator and install an appropriate fitting to convert to RV low pressure with quick connect.
However, this will void warranty because of a 'custom modification' of the unit and the owner is solely liable for anything that may occur due to modification of the grill.
by Camping World – July 09, 2015
Connect a high-pressure grill or appliance that uses throw-away propane cylinders to a high-pressure RV onboard propane supply.
If you wish to share feedback with us about product selection, pricing, ordering, delivery or other customer service issues, please do not submit this feedback through the Question & Answer Service. Please contact Customer Service at 1-888-626-7576.