QB640H-64B,QB640H-10C,QB640H-16C,QB640H-25C,QB640H-40C,QB640H-64C,QB640H-10P,QB640H-16P,QB640H-25P,QB640H-40P,QB640H-64P,QB640H-10G,QB640H-16G,QB640H-25G,QB640H-40G,QB640H-64G,QB640H-10W,QB640H-16W,QB640H-25W,QB640H-40W,QB640H-64W,QB640H-10J,QB640H-16J,QB640H-25J,QB640H-40J,QB640H-64J,QB640H-10D,QB640H-16D,QB640H-25D,QB640H-40D

QB640H，QB640Y型氣動偏芯半球閥（采用AW型執(zhí)行器、帶手輪手動操作器）概述

QB640H，QB640Y型氣動偏芯半球閥（采用AW型執(zhí)行器、帶手輪手動操作器）是一種直角旋轉(zhuǎn)的控制閥，由活塞式雙作用或單作用（彈簧復(fù)位式）氣動執(zhí)行器和偏芯半球閥組成，它與電氣閥門定位器或電磁閥配套使用，可實現(xiàn)對工藝管路中流體介質(zhì)的調(diào)節(jié)或切斷控制。半球切口的球體與閥座之間具有剪切作用，特別適用于含有纖維、微小固體顆粒、紙漿、煤灰等介質(zhì)的工況.