Hey,
As someone stated earlier, this thread seems to be filled with conflicting advice from pre-2017 owners. I'm new to the forum and R-Pod in general, so I may be wrong. There is definitely a sticker at the 2017 quick connect valve stating "DANGER: HIGH-PRESSURE PROPANE QUICK CONNECT." I haven't inspected upstream of this valve, but I assume it's connected with a Y, directly from the propane tank.
I've had similar difficulty with trying to find an appropriate setup for my Weber Q which contains a stock regulator on the grill, downstream of the propane tank and hose. My knowledge of gas fittings is non-existant, but this is the system I will test out this weekend - listed in order of connection. My guess is if I knew more, I could trim 1 or 2 of these connections, which I would prefer, but I already own the Weber 6501 Adapter hose, so it's about 50 dollars extra from my standard direct to 20lb tank setup in my backyard. I think this setup (the last 3 connections) will work for any high pressure grill with a standard propane connection.
Weber Q grill
Weber 6501 Adapter Hose
Onlyfire Universal Fit Propane Tank adapter POL to QCC1
Mr. Heater Propane cylinder fill plug with a 7/8" Female POL
Camco 57282 10' Propane Quick-Connect Hose
I'm going to attach the threads with a gas approved pipe dope. The PSI of the Camco hose matches the Weber adapter hose (350PSI), making me think I'm safe for pressure requirements. If anyone thinks the above setup is dangerous, let me know! Seems straightforward to me (after 2 days of internet searching). Hopefully all the adapter sizings are correct. I can report back after this weekend.
Bryan
Edit: some words and typos.
Edit 2: Above setup does not work. See post below.