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![]() Rotary Gauges
For NH3 & LPG
These units give visual indication of the amount of NH3 / LPG in the tank and are also used in filling the tank to the correct liquid level.
The liquid level is determined by opening a small bleed orifice when the tube is in the vapor space of the tank. Moving the pointer causes the tube to move until it contacts liquid and discharge from the orifice turns from vapor to liquid. |

