Connecting LP Cannister Stuf to Tank - Fiberglass RV

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Old 09-30-2006, 11:30 PM   #1
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Here's some interesting info I ran across on another RV group:

A quick lesson on propane presures and connections.
There are three basic propane pressures:

tank preesure, which is what you get fom any propane cylinder/tank which can be several hundred PSI depending on the temperature.

high pressure, which is apx 13 PSI, and is used on most "outdoor" propane equipment.

low pressure, which is less than 1 PSI or 11 column inches of water pressure. This is the pressure by law that MUST be used on any prepane connection that is in an enclosed habitable inside your trailer.

Some RV's come with a connection on the outside of the trailer for attaching usually a stove or BBQ.
If the connection has screw threads it is designed to be operated on high pressure.
If the connection had a push/pull quick disconnect then it is low pressure. Another way of checking is if the outside line is simply tapped off the interior line (which has to be low pressure) or is run from either the first stage of a two stage regulator (high pressure), or a seperate regulator which would also be high pressure.

So now on to the appliances. Any stove, BBQ, lantern, etc that uses a one pound or 14 oz cylinder has an internal regulator. This regulator MAY be EITHER low or high pressure depending on the manufacturer.
IF it is low pressure, and Camp Chef, and IIRC the Weber BabyQ are, you can use an adapter in the appliance and a hose with a fitting to your trailer connection no matter what the pressure is in the line.
If the appliance has a high pressure internal regulator it can be used with a high pressure line, but not a low prresure line. A low pressure line just won't flow enough.

Most Coleman stoves have a high pressure internal regulator, so unless you have a FLeetwood trailer with the high pressure connection your options are, to continue to use the one pounders or add a line before the existing regualtor on the tanks to provide tank pressure for the stove. Products such as the XtendaT are available at even wally worlds. They amount to a T fitting that screws into the tank and the regulator and has a line off the T for what ever you want to supply propane to.


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