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-64D,QB640H-10Q,QB640H-16Q,QB640H-25Q,QB640H-40Q,QB640H-64Q,QB640H-10KJ,QB640H-16KJ,QB640H-25KJ,QB640H-40KJ,QB640H-64KJ,QB640H-10BJ,QB640H-16BJ,QB640H-25BJ,QB640H-40BJ,QB640H-64BJ,QB640H-10GC,QB640H-16GC,QB640H-25GC,QB640H-40GC,QB640H-64GC,QB640H-10KW,QB640H-16KW,QB640H-25KW,QB640H-40KW
QB640H型氣動(dòng)偏芯半球閥(采用AW型執(zhí)行器、帶手輪手動(dòng)操作器)概述
QB640H型氣動(dòng)偏芯半球閥(采用AW型執(zhí)行器、帶手輪手動(dòng)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(dòng)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(shí)現(xiàn)對(duì)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.
QB640H型氣動(dòng)偏芯半球閥(采用AW型執(zhí)行器、帶手輪手動(dòng)操作器)結(jié)構(gòu)特點(diǎn)
雙偏心式半球閥是近年來(lái)開(kāi)發(fā)的*產(chǎn)品,以其設(shè)計(jì)合理,結(jié)構(gòu)*,具有流通阻力小,密封性能好,使用壽命長(zhǎng)特點(diǎn),利用偏心閥體、偏心球體和閥座,閥桿作旋轉(zhuǎn)運(yùn)動(dòng)時(shí)在共同軌跡自動(dòng)定心,關(guān)閉過(guò)程中越關(guān)越緊,*達(dá)到良好的密封目的,閥門在啟閉動(dòng)作時(shí)球體與閥座*脫開(kāi),消除了密封圈的磨損,克服了傳統(tǒng)球體閥座與球體密封面始終磨損的問(wèn)題,非金屬?gòu)椥圆牧媳磺队诮饘僮?,閥座金屬密封面受到良好的保護(hù)。全開(kāi)時(shí)流通能力大、壓力損失小、且介質(zhì)不易沉積在閥腔內(nèi)。具有精確的調(diào)節(jié)和可靠定位功能,流量特性為近似等百分比,可調(diào)范圍大,zui可調(diào)比100:1。