Two-Stage Propane Regulator

Marine Two-Stage Propane Regulator - for Dual Tanks

Connects to 2 Propane Tanks - with Automatic Switch Over
By: Fireboy

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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 full cylinder when the selected cylinder is empty. The selector switch dome remains red/orange until a full cylinder is selected.

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.

• Integral manual tank selector switch
• Intergal stainless steel wall mounting bracket
• Regulator has a 3/8" female NPT outlet
• Die cast zinc body is UL listed
• Meets ABYC standards
• 1-Year limited warranty

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.

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