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.

超低溫蝶閥采用偏置閥桿和偏心蝶板設(shè)計(jì)，在開(kāi)啟和處于中間位置時(shí)，閥座與蝶板不發(fā)生接觸，在減小扭矩的同時(shí)減少了對(duì)閥座的摩擦，提高了閥的耐久性，是一種高性能的調(diào)節(jié)、切斷型閥門(mén)。該閥門(mén)的設(shè)計(jì)旨在應(yīng)對(duì)當(dāng)今工業(yè)環(huán)境中最難以處理的各種介質(zhì)，包括液氧、液態(tài)天然氣和其他低溫液體。

止回閥又稱(chēng)單向閥或逆止閥，是靠管路中介質(zhì)本身的流動(dòng)產(chǎn)生的力而自動(dòng)開(kāi)啟和關(guān)閉的，屬于一種自動(dòng)閥門(mén)。止回閥用于管路系統(tǒng)，其主要作用是防止介質(zhì)倒流、防止泵及其驅(qū)動(dòng)電機(jī)機(jī)反轉(zhuǎn)，以及容器內(nèi)介質(zhì)的泄放。止回閥還可用于給其中的壓力可能升至超過(guò)主系統(tǒng)壓力的輔助系統(tǒng)提供補(bǔ)給的管路上。生產(chǎn)的止回閥有旋啟式止回閥和升降式止回閥。