Operating conditions of double-eccentric butterfly valves
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Double-eccentric butterfly valves feature good sealing performance, long service life, and low torque. At present, there are not many mature manufacturing processes available for their production; this may be due to designers’ limited knowledge of these valves or other considerations. Are there any other application areas besides air conditioning, power plant condensate, and small-scale air separation where these valves are actually used on a large scale?
Manufacturers don’t produce butterfly valves properly, which results in a very poor reputation for these valves! ! ! !
Double-eccentric butterfly valves seem to be neither ideal nor satisfactory in terms of performance. Since domestic valve manufacturers supply a large quantity of triple-eccentric butterfly valves, and design institutes often opt for VI-grade sealing, many organizations simply choose triple-eccentric butterfly valves, paying little attention to aspects such as leakage rates and other performance metrics.