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Old 09-30-2021, 03:11 PM   #1
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Winnebago Owners Club
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Question Propane Extend a stay for diesel pusher

I have a 2006 Itasca diesel pusher in a mostly permanent site that I would like to put on a separate propane tank like an extend a stay system. All the videos seem to have them mounted on class C type RV's that have the tank and regulator running parallel to the frame and a shut off valve on the tank itself. Those of us who have pushers know the 75 lb tank is mounted perpendicular and across the frame rails and the valve is on a switch and is electrically controlled at the control panel As seen in the picture the regulator is almost touching the cargo door when it is shut and no real room to mount an extend a stay.
Anyone out there find a rig up for this type of system? Thanks in advance.
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2006 itasca Ellipse 40KD 350 CAT Diesel
Mahaffey, PA
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Old 09-30-2021, 04:49 PM   #2
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It's just a matter of plumbing connections. The tank side is high pressure, the regulator inlet accepts that high pressure. You can disconnect that hose (turn the tank off first!) and use brass plumbing parts to extend the inlet of the regulator up vertically above the regulator, and add a T connection there. For safety, I would add a ball valve to close off the extend-a-stay fitting. Choose a combination brass acme nut fitting that (should) have a spring loaded valve in the bottom of it, and then make up a hose that has two plastic acme nuts on it - one for the RV and one for the outboard bottle. Technically this is a double-ended hose, which is why you want that ball valve on the T - b/c when you connect the hose, you have just OPENED the valve in the acme fitting. There will be a pressure exchange, so having that ball valve closed (and the outboard tank off) will keep everything sealed until you turn on the outboard tank, and then open the ball valve.

There will be a pressure exchange with the onboard tank. IF you put the outboard tank upside down and above the level of the onboard tank, as the pressure exchanges and after it equalizes, the outboard tank will drain (as liquid) back into the onboard tank. This is OK - once the transfer is complete, the lines will flash back to full of vapor and the regulator is designed to handle either one, but it prefers vapor. If you leave the outboard tank on the ground and right side up, only vapor pressure will transfer and equalize.

When changing the tank, turn the ball valve off, turn off the outboard tank, and then it is safe to disconnect and change.
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Old 09-30-2021, 06:47 PM   #3
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Make sure you use a ball valve rated for gas. I found mine at Lowe’s.
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Old 10-01-2021, 07:58 AM   #4
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Jonathan, here a link to the Marshall extend of stay. It connects between the tank and the regulator. Hard to tell from your picture how to do this on your coach. Some more pictures would help. One farther back showing the hoses and one of the right side of the regulator. Can you get to the fitting where the hose connectors to the tank?
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Old 10-29-2021, 07:51 AM   #5
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Thanks for all the replies. I'm sorry for not getting back sooner. I had a 10 foot hose with a regulator I bought years ago for a range in a cabin that we since sold. I was able to just disconnect the main RV tank and screw in the hose and works like a charm. Of course I will have to return it to stock if I move the RV but at 4.00 a gallon for diesel it's gonna sit at the site for the foreseeable future LOL.
2006 itasca Ellipse 40KD 350 CAT Diesel
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diesel, propane

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