The quality of forged steel parts is higher than that of cast steel parts, and they can withstand the impact of beatings. The plasticity, toughness, and other mechanical properties are higher than those of cast steel parts. The diameter of cast steel gate valves is generally not more than DN80, and most of them are reduced-diameter designs. Compared with cast steel gate 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 the sealing performance is much better than that of cast steel gate valves, and the service life is longer. The flow direction of the medium is not restricted like other gate valves.

全焊接球閥閥體采用優(yōu)質(zhì)材料鍛制而成，球體側(cè)裝，中法蘭和頸部采用全焊接連接。全焊接球閥有筒形全焊接閥體結(jié)構(gòu)和球形全焊接閥體結(jié)構(gòu)兩種形式。浙江歐菲主要生產(chǎn)的是筒形閥體結(jié)構(gòu)的全焊接球閥。浙江歐菲擁有一整套成熟的低殘余應(yīng)力、低韌性損耗的焊接技術(shù)，以國際先進(jìn)標(biāo)準(zhǔn)為依據(jù)，用焊接接頭斷裂韌度CTOD值進(jìn)行免焊后熱處理安全評估。浙江歐菲不同材質(zhì)間的焊接工藝均經(jīng)過獨(dú)立認(rèn)證權(quán)威機(jī)構(gòu)TUV的認(rèn)證，焊接接頭的安全性通過專家評估。根據(jù)球閥公稱尺寸與公稱壓力，我們可以提供的全焊接球閥有：全焊接固定球閥和全焊接浮動(dòng)球閥?？梢愿鶕?jù)客戶的使用工況，提供閥桿加長型埋地式全焊接球閥。閥桿加長的尺寸是由客戶來提供的。

The Cryogenic Temperature and High Performance Butterfly Valve adopts an offset valve stem and eccentric butterfly plate design. When opening and in the middle position, the valve seat and the butterfly plate do not contact each other, which reduces the friction on the valve seat while reducing the torque, and improves the durability of the valve. It is a high-performance regulating and cutting valve. The valve is designed to handle various media that are most difficult to handle in today's industrial environment, including liquid oxygen, liquid natural gas and other cryogenic liquids.