The pressure gauge on my irrigation system was damaged during an unexpected freeze one recent night. It was mounted directly on a tap on the pump. If I replace it and use an extension of 4"-8" to create a vertical air column, will this keep a new one from freezing or will water work it's way up to the gauge anyway? AND will it reflect the pressure the same whether it's measured against water or the compressed air column? (According to ol' Bernoulli, it should be the same!)
Frozen pressure gauge
dimanche 17 mai 2015
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