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mbopp's avatar
mbopp
Explorer
May 31, 2015

Dual to Single Propane Regulator

It appears my auto-switching regulator leaves a few pounds of propane in the "empty" tank. I have a single tank RV regulator from a previous project and installed it in place of the auto-switching one.
Are there any issues with "T"-ing the tanks together and running the input line to the regulator? Or should I just unscrew the tank connector and switch it manually? I don't plan to run with both tanks "on" (good way to run out of propane unexpectedly.)

5 Replies

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  • time2roll's avatar
    time2roll
    Nomad
    May 31, 2015
    Chris Bryant wrote:
    It will go red, simply because the tank pressure is below the set point, but it should flow until empty..
    +1 this is about what mine does.

    OP, as long as you only have one open at a time then you may as well use a single input regulator.
  • Chris_Bryant's avatar
    Chris_Bryant
    Explorer II
    May 31, 2015
    It will go red, simply because the tank pressure is below the set point, but it should flow until empty..
  • mbopp's avatar
    mbopp
    Explorer
    May 31, 2015
    Yes, it's a 2-stage regulator from my old pop-up I converted to dual tanks.
    Nope, with the spare tank valve closed the indicator window goes to red (no gas) with several pounds left. DB has the same gripe on his toy hauler.
    Now off to the hardware store.....
  • Chris_Bryant's avatar
    Chris_Bryant
    Explorer II
    May 31, 2015
    If you simply don't turn on both cylinders, the auto regulator will use all of the LP. It simply switches when tank pressure gets below ~20-30 psi, but only if the aux cylinder has above that pressure.

    I assume your "new" regulator is a 2 stage- a single stage is not adequate for RV use.
  • Bend's avatar
    Bend
    Explorer
    May 31, 2015
    I’ll trade the convenience of the auto switch and a few pounds left in the tank for the inconvenience of running out of gas when dinner is in the oven baking or roasting or the wx is cold and stormy and the furnace quits in the middle of the night. YMMV.

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