歐菲硬密封耐磨球閥專為承受高溫、高壓和磨損性介質(zhì)的極端工況設(shè)計(jì)。采用高品質(zhì)合金鋼制造，通過(guò)先進(jìn)的硬化技術(shù)增強(qiáng)球體和閥座的耐磨性。硬密封設(shè)計(jì)保證了在苛刻環(huán)境下的卓越密封性能。此外，該閥門結(jié)構(gòu)堅(jiān)固，操作維護(hù)簡(jiǎn)便，極大降低了維護(hù)成本，是石油化工、電力及礦業(yè)等重工業(yè)領(lǐng)域的理想選擇。

歐菲C型球閥采用雙偏心設(shè)計(jì)：C球回轉(zhuǎn)中心（軸心）與C球密封面幾何中心（球心）、C球回轉(zhuǎn)中心與閥座密封中心的雙偏心設(shè)計(jì)。閥桿在兩個(gè)平面上的偏移產(chǎn)生C球旋轉(zhuǎn)+平移的雙矢量凸輪運(yùn)動(dòng)。閥門關(guān)閉時(shí)，C球與閥座產(chǎn)生凸輪楔緊的扭矩密封。扭矩密封的動(dòng)力來(lái)自于手柄、齒輪、執(zhí)行機(jī)構(gòu)，從機(jī)械原理上確保不依賴彈簧或工藝壓力而實(shí)現(xiàn)嚴(yán)密關(guān)斷。

The quality of forged steel parts is higher than that of cast steel parts, and they can withstand large impact forces. Their plasticity, toughness, and other mechanical properties are higher than those of cast steel parts. The diameter of forged steel stop valves is generally not more than DN80, and most of them are reduced-diameter designs. Compared with cast steel stop valves of the same diameter, the flow rate is slightly lower, but the pressure and temperature range they can withstand are higher than those of cast steel valves, and their sealing performance is much better than that of cast steel stop valves, and their service life is longer. Like other stop valves, they are subject to the restrictions of the flow direction of the medium. Forged steel stop valves can be divided into straight-through stop valves (type stop valves) and direct-flow stop valves (Y-type stop valves) according to installation positions.