A42F - 16 - c to 40 type relief valve is suitable for the job - 29 ~ + 80 ℃ temperature of liquefied petroleum gas (LPG) and similar non corrosive medium equipment and piping.AH42F type safe backflow preventer for liquefied petroleum gas tank liquid reflux pipe on pump discharge, when equipment and pressure exceeds allowable values in the pipeline, valve automatically opens, then the amount of emissions, when pressure is reduced to the specified value, the valve automatically shut down, guarantee the safe operation of the equipment.
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