Multi - turn operation allows for precise throttling of manual valves 多旋轉(zhuǎn)操作使得手動閥門能夠進行精確節(jié)流。
The single unit cap and lifting lever permit manual valve opening ( testing ) with low required force on the lever 這種一體式閥蓋和提升桿使得檢測人員只需輕輕扳起測試桿即可人工手動開啟閥門進行測試。
The results show that , when the compressor continuously runs , the stability of the test bed after using manual valve is better than that of using thermal valve , and it is little affected by the kinds of valves for adjusting cooling water ; and that , when the compressor intermittently runs , the operation stability would be obtained if pneumatic valve is used to adjust cooling water , especially at low speed 結(jié)果表明,壓縮機連續(xù)運行時,制冷劑采用手動閥調(diào)節(jié)后工況的穩(wěn)定性明顯好于采用熱力膨脹閥時的情況,此時調(diào)節(jié)冷卻水量用的電動調(diào)節(jié)閥和氣動調(diào)節(jié)閥對工況穩(wěn)定性影響相差無幾;間歇運行時,無論是熱力膨脹閥還是手動閥,即便壓縮機通電時間最長,仍達不到設(shè)定工況,特別是低速的斷續(xù)尤為明顯,而使用氣動閥就能很好地解決這一問題。
Impeller is adopted for the type of static mixer element that makes easy to exchange an impeller when it will be hardened in a job and has a cost saving effect . the mixer driven type is optional for an air motor or an electrical motor and it is available to operate it as the manual valve type by an operator 推進器被選作靜態(tài)混合器元件使得當(dāng)靜態(tài)混合器推進器工作時被固化后推進器很容易的被調(diào)換,從而節(jié)約成本,混合驅(qū)動類型可以任意選擇空氣馬達或電動馬達或操作者手工操作。