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This is a two-stage wall mounted regulator with two 300 psi leak test pressure gauges. It draws from 2 tanks, and automatically changes over to the full cylinder when the first selected cylinder is empty. The selector switch indicator shows red or green until the manual selector switch is pushed fully toward a full propane cylinder. The empty tank can then be disconnected for refill.
Connects to tanks using 20" high pressure adaptor hoses with a 1/4" male inverted flare fitting on the end - see: T/R 1014-1401-20 and FRB PA-5426 hoses (with POL tank fittings), or T/R 1014-1415-20 hose (with black hand nut for new Type 1 tank valves with external threads) - all sold separately.
• Regulator mounts to wall surface
• Integral manual change over lever
• UL listed body is assembled and leak tested
• Regulator outlet: 3/8" female NPT
• Includes a 2-piece wall mounting bracket
• Meets ABYC marine LPG standards
Heavy on the technical side...
What Does That Pressure Gauge Tell You?
Thinking back to your high school chemistry class — because of the physics of your propane tank always containing both liquid and gaseous propane, the pressure inside the tank remains virtually constant until all the liquid propane is gone and the tank is functionally empty.*
For this reason - and unlike gas-only SCUBA or CNG tanks - the pressure on the gauge cannot be used to determine how full the tank is.
The pressure gauge is only there to perform periodic leak tests to check the integrity of your system.
We recommend that leak tests be performed every time the tank valve is opened, and at least every two weeks when the valve is left open during extended use.
How Much Propane Is Left In My Tank?
To determine how much propane is left in a tank, you have to weigh it and then subtract the known weight of the empty tank.
Or, with a translucent composite tank, you can just look at it to see the level of the liquid propane in the tank. This feature, alone, probably goes a long way toward explaining the huge popularity of composite propane tanks.
* The pressure in the tank will vary somewhat with changes in the ambient temperature.