產(chǎn)品特點〖Q641F氣動調(diào)節(jié)球閥〗【Q641F氣動調(diào)節(jié)球閥-產(chǎn)品說明】氣動調(diào)節(jié)球閥是一種轉(zhuǎn)角為0-90°的旋轉(zhuǎn)類閥門,密封性能優(yōu)良,流量系數(shù)大,流阻系數(shù)小,結(jié)構(gòu)簡單,使用壽命長,便于維修