How to clean the gas boiler? - FangKuai Boiler
2019-9-13 · The acid is discharged. After the acid is drained, the boiler feed water pump is operated, and the water of one economizer is filled into the boiler to prevent the water supply shutoff valve from leaking. Third, matters needing attention The gas boiler can be pickled with 5% hydrochloric acid with 0.25% ammonium difluoride inhibitor added.
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