英国斯派莎克DCV3止回阀英文版介绍： Spirax Sarco provides various forms of non-return valve , which can effectively prevent the backflow of fluid pipes . Easy to install and maintain . Brief introduction DCV2 and DCV3 disc flange on the folder for the installation of check valves , can be widely used in process piping , hot water systems, steam and condensate systems in a variety of fluids , connection dimensions comply with EN558 Part1, Series49. Standard products for the metal seat for steam systems. When used in the oil , air, gas , and water valve seat can be selected for other materials . Owner: Wafer Check Valve is not suitable for severe pulsating occasions, such as compressors. DCV series check valves compact structure , easy to install. Can be installed in vertical or horizontal pipe or inclined pipelines , simply two flanges on the folder to install. DCV check valve for steam and a variety of liquids, gases and other industrial systems , and provides various options depending on the application : Seat options: Metal seat (Metal): - suitable for steam or other high temperature fluid systems . Temperature range -200 ℃ ~ 400 ℃. Rubber seat (Viton): - applies to oil and gas systems , to ensure a good seal . Temperature range -15 ℃ ~ 250 ℃. EPDM seat (EPDM): - for water systems. Temperature range -50 ℃ ~ 150 ℃ Spring options: Standard spring - with a dry steam, water and many other industrial fluid system . Nickel-chromium alloy spring - for high temperature systems. Strong spring - for boiler feedwater system . No springs - for low flow pressure loss system . Only for vertically upward flow in the pipeline . 英国斯派莎克DCV3止回阀中文版介绍： DCV2和DCV3为碟片式法兰对夹安装止回阀，可广泛应用于过程管道、热水系统、蒸汽和冷凝水等系统中的各种流体，连接尺寸符合EN558 Part1，Series49。 英国斯派莎克DCV3止回阀标准产品为金属阀座，用于蒸汽系统。当用于油、空气、气体和水系统时可以选用其他材料的阀座。 主：对夹式止回阀不适合用于有严重脉动的场合，比如压缩机。 DCV系列止回阀结构紧凑，安装简便。可安装在垂直或水平管道或倾斜管道，只需简单的两片法兰对夹安装即可。 DCV止回阀可用于蒸汽和各种液体、气体等工业系统中，并可根据实际应用提供各种选择: 阀座选择: 金属阀座(Metal):-适用于蒸汽或其它高温流体系统。 温度范围 -200℃~400℃。 橡胶阀座(Viton):-适用于油及气体系统，可确保良好密封。 温度范围 -15℃~250℃。 三元乙丙阀座(EPDM):-适用于水系统。 温度范围 -50℃~150℃ 弹簧选择: 标准弹簧 - 用干蒸汽、水及其它多种工业流体系统中。 镍铬合金弹簧 - 用于高温系统。 特强弹簧 - 用于锅炉给水系统。 无弹簧 - 用于低流动压损系统。仅用于流向垂直向上的管道中。