【Compatible Models】: Propane Fill Adapter for gas with Gauge and Thimble Protective Cap for use with Propane Camping Tanks; can be used for gas Tanks, Air Spray, Propane Tanks. 【Function】: Detect the air pressure and air tightness of the gas in the propane tank, the propane filling adapter is equipped with a pressure gauge, you can observe the amount of gas used through the pressure gauge, it also has an exhaust valve, which can exhaust the air when needed.
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