进口缓闭式止回阀【进口止回阀***】德国奥莱斯
【进口缓闭式止回阀】详细说明：
缓闭式止回阀由主阀、单向阀、针型阀、球阀、微形过滤器和压力表组成水力控制接管系统。利用水力自动操作，可使主阀得到佳的开启或关闭速度。防止水锺水击的产生，以达到缓闭消声的效果。利用水力自力控制，不需要其它装置和能源，***简便，开启及缓闭平稳。产品广泛用于高层建筑、生活区等供水管网系统及城市供水工程。
当阀门从进口端给水时，水通过微型过滤器、针型阀、单向阀进入主阀控制室，再经过球阀排水至下游。因为针型阀开度小于球阀开度，即主阀控制室的排水速度大于进水速度，因此控制室压力降低，作用于主阀盘下端的进口压力打开主阀向下游供水。
当管道停止供水时，若下游水开始回流，一部分回流水经球阀进入主控制室，由于单向阀作用，回流水不能从主控制室流出，引起主控制室逐渐升压，缓缓关闭主阀。
Slow-closing check valve c***ists of main valve, one-way valve, needle valve, ball valve, micro-filter and pressure gauge. By using hydraulic automatic operation, the main valve can be opened or closed at a good speed. Prevent the water hammer of water clocks, so as to achieve the effect of slowly closing and silencing. With hydraulic self-control, it does not need other devices and energy. It is easy to maintain, open and close ***oothly. Products are widely used in high-rise buildings, living areas and other water supply network systems and urban water supply projects.
When the valve feeds water from the inlet end, water enters the main valve control room through micro filter, needle valve and one-way valve, and then drains down through the ball valve. Because the needle valve opening is ***aller than the ball valve opening, that is, the main valve control chamber drainage speed is greater than the water inlet speed, so the control chamber pressure reduces, the inlet pressure acting on the lower end of the main valve disc opens the main valve downstream water supply.
When the pipeline stops supplying water, if the downstream water begins to flow back, part of the backflow water enters the main control room through the ball valve. Because of the function of one-way valve, the backflow water cannot flow out from the main control room, which causes the main control room to gradually increase pressure and slowly close the main valve.
【进口缓闭式止回阀】结构说明：
该阀由主阀2、单向阀5、针阀1、球阀3与压力表4等组成。缓闭式逆止阀具有开启和关闭速度调控的逆止功能，阀门安装后能有效控制水泵在启动与停止运转时会自动调节到***佳开启与关闭的速度。适用于工矿企业，高层建筑由水泵直接给排水系统中，减小水锤及水击现象产生，以达到安全关闭的效果。
【进口缓闭式止回阀】用途：
微阻缓闭止回阀用于给排水管道，安装在水泵出口处用来防止介质逆流和消除***性水锤，并能有效地减少阀门关闭水锤压力，可保障管网安全运行。
【进口缓闭式止回阀】技术参数：
公称压力：1.0～2.5MPa
公称通经：40～800mm
适用介质：水、弱腐蚀性液体
适用温度：0～80℃（如需要，可达200℃）