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jmccen58's avatar
jmccen58
Explorer
Mar 07, 2015

Extend-a-Stay propane connections ?

Looking to get the connections to hook a 20# "grill" tank to my larger mh tank. Is there one I can buy that hooks into the fill fitting of the mh or do I have to get one that tees into the mh regulator between tank?
  • wa8yxm's avatar
    wa8yxm
    Explorer III
    There is NO adapter that hooks into the fill fitting and in fact that is a one -way fitting (Fill only).

    Use the Stay-A-While from Mr. heater, this appears to be identical to the Extend-a-stay which used to be made by Marshall brass and many of us have.. works great, easy install.

    rememver POL (Prest-o-Lite) also stands for PUT ON LEFT, it is left handed threaded.
  • The Extend-A-Stay is inserted between the tank and regulator. I have never seen a fill adapter on a horizontal tank anywhere but at the LP station
  • Hi,

    I have a extend-a-stay type of tee in the line for my motorhome. It basically looks like the regulator input on one side, output of the tank on the other side, and has a fitting that looks like the top of a disposable 1# propane tank in the middle.

    To that fitting, I can hook up a 12' long extension hose, and run my lantern or propane BBQ.

    I also bought a LP tank adapter for my propane 20# tank, that I can connect directly to the BBQ or LP lantern.

    I also bought two connectors that look like the base of the LP lantern, so LP input fittings, with 3/8" output MPT. I bought a 3/8" MPT coupling to connect them together. So now I can hook up this connector to the RV tee, then the 4' hose from the 20# tank to this tee. I connect everything with both tanks shut off, as it can shoot out propane the way it is, if the tank is not off.

    Then I can open either the RV tank or portable 20# tank, and use propane from the open tank. I was able to live in my RV 4 years without filling the main tank this way.

    Good luck!

    Fred.