Spirax Sarco Check Valve Details: Spirax Sarco provides various forms of non-return valve , which can effectively prevent the backflow of fluid pipes . Easy to install and maintain . DCV Series Check Valve Disc Check Valves L bad check valve DCV system compact structure , easy to install. Can be installed in vertical or horizontal pipe or inclined pipelines , simply two flanges on the folder to install. DCV2 / B Series Check Valve uses a special structure , specifically for boiler feed water, boiler water to prevent backflow . 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: Spirax Sarco 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 ℃ Spirax Sarco check valve 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 . Spirax Sarco SDVC series check valves Split Disc Check Valves SDCV series split disc check valve flange on the clip can be used for a variety of industrial fluids such as steam , condensate , hot water system, prevent backflow of fluids in pipes . Offers a variety of material selection, maximum diameter of DN300. LCV Series Check Valve Lift Check Valves LCV Series lift check valves installed in horizontal pipe can be used for a variety of steam , condensate and hot water systems. The connection is a threaded connection , the maximum diameter of 80mm (3 "). LCV Series Check Valve Lift Check Valves LCV Series lift check valves installed in horizontal pipe can be used for a variety of steam , condensate and hot water systems. Connection to threaded connections , the maximum diameter of 80mm (3''). 斯派莎克提供各种形式的止回阀，可有效的防止管道中流体回流。同时安装和维修简便。 DCV系列止回阀Disc Check Valves DCV系歹l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。 DCV2/B系列止回阀采用特殊结构，专门用于锅炉给水，防止锅炉水倒流。 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