How To: Connect a Coleman Grill to an RV Propane Line

Who wants to have to buy those little propane tanks to run their portable grill when they're near their RV which already has an abundant supply of propane (assuming you remembered to refill!)?  We don't. It's another thing to remember, an added expense, and one more thing headed to the landfill. 

When we lived in a house it was easy enough to connect our grill to the same gas line we used for cooking and heating. We figured we'd do the same with our trailer. For whatever reason, the information available online is scarce and not very well documented so we hit some pitfalls that we thought we try to help others avoid. In the end it would have been a pretty easy project if we just had a little more information. So here it is for anyone else looking to do the same. 

Our Goal

  1. Be able to easily (and not permanently) connect our grill to our RV's low-pressure propane line.

  2. Also be able to use our grill away from the trailer for something like a concert or sporting event tailgate.

Our existing setuP

  1. A existing 3/8" male propane connection with shutoff valve for auxiliary propane connections.

  2. A Coleman RoadTrip LXE portable propane grill.

Purchases

**UPDATE: If you want to have the option to use either your RV propane line OR the original setup and don't want to risk damaging the brass fitting when removing it from the regulator, there is now a part available that will let you do this. See the last item listed below (Sturgi-Safe RoadTrip Low Pressure Quick Disconnect Conversion Fitting).

Process

1. Remove the brass fitting from the regulator that came with the grill. BE VERY CAREFUL. My first attempt at this damaged the fitting enough that it created a gas leak and I had to purchase a replacement regulator. As our reader Russel M. has suggested: "When you remove the threaded connection for the grill from the regulator, if you heat up the tubing that threads into the brass fitting, it comes off a lot easier. ... Don't heat up the brass fitting because you don't want to damage the seal inside but just the steel tubing."

UPDATE: The other option is to purchase the Sturgi-Safe RoadTrip Low Pressure Quick Disconnect Conversion Fitting.

 Be very careful not to damage the brass fitting when removing with a wrench. Use a piece of rag or rubber from an old bike tube to protect the fitting from the wrench teeth.

Be very careful not to damage the brass fitting when removing with a wrench. Use a piece of rag or rubber from an old bike tube to protect the fitting from the wrench teeth.

 

2. Attach the 1/4" to 1/8" elbow to the brass fitting using gas line pipe thread tape.

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3. Attach the quick connect fitting to the 1/4" side of the elbow using gas line pipe thread tape.

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4. Attach any fitting(s) necessary to connect the DozyAnt valve to your trailer's propane line. We needed a 3/8" FIP to 1/4" MIP. Make sure to use pipe thread tape.

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5. Connect the Coleman brass fitting with elbow and quick connect to the grill by spinning it clockwise.

 This picture was taken when I was testing the seal on the original regulator piece that I damaged. By applying warm soapy water to a pressurized line you can determine if there is a leak by whether or not bubbles form. It's always a good idea to perform this test.

This picture was taken when I was testing the seal on the original regulator piece that I damaged. By applying warm soapy water to a pressurized line you can determine if there is a leak by whether or not bubbles form. It's always a good idea to perform this test.

 

6. Connect your hose to both ends and you're good to go!

7. If you purchased an additional regulator, you can remove this fitting, attach the original regulator setup and a 16 oz Coleman propane cylinder and you're back to having a fully portable grill!

References

Many thanks for the following contributions which got me pointed in the right direction. It would have been a lot more painful without them.

  1. James Fraley: https://www.youtube.com/watch?v=ih0TJLQJ8gU

  2. Shawn LeBleu: https://www.youtube.com/watch?v=cq9yZ6y-H2s&t=34s

 

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