Jeff, In regards to cleaning the valves; do you prefer to remove the patina as well as the junk on the valves? Or just the white crusty material. I've tried to convince my repairman to leave the dark patina but he insists on getting back to shiny bare brass. I feel that bare brass in the presence of water with dissolved carbon dioxide (the exhaled breath is a perfect example) is more prone to dezincification resulting in white powdery deposits and ultimately degradation of the valve surface. Whereas the dark patina provides some degree of protection. What do you prefer to do?
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Jeff,
In regards to cleaning the valves; do you prefer to remove the patina as well as the junk on the valves? Or just the white crusty material. I've tried to convince my repairman to leave the dark patina but he insists on getting back to shiny bare brass. I feel that bare brass in the presence of water with dissolved carbon dioxide (the exhaled breath is a perfect example) is more prone to dezincification resulting in white powdery deposits and ultimately degradation of the valve surface. Whereas the dark patina provides some degree of protection. What do you prefer to do?