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X valves and 410a

Been changing them like crazy, almost all R22 systems. Parker, Alco the worst!! Tech rep from Allied Air said not unusual to go through them right & left. Local tech rep for A-S said the same thing Tuesday when we were chatting. Had a new Rheem coil with bad Alco TXV, replaced coil, bad Alco TXV. Had an older Sporlan for same coil on hand, it worked. 3rd times a charm :(


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