产品特性:防止倒流 | 品牌:美国莱恩 | 型号:LAINE |
材质:不锈钢 | 连接形式:法兰 | 加工定制:是 |
种类:NRVR静音式 | 结构形式:旋启式 | 公称通径:DN15~3000mm |
适用介质:水 | 形态:柱塞式 | 压力环境:常压 |
标准:美标 | 流动方向:单向 | 驱动方式:自动 |
工作温度:常温 | 类型(通道位置):二通式 | 规格:中型 |
进口不锈钢止回阀 美国莱恩LAINE止回阀价格
进口不锈钢止回阀产品简介:
美国《LAINE》莱恩--进口不锈钢止回阀启闭件靠介质流动和力量自行开启或关闭,以防止介质倒流的阀门叫止回阀。止回阀属于自动阀类,主要用于介质单向流动的管道上,只允许介质向一个方向流动,以防止发生事故。止回阀又称单向阀或逆止阀,水泵吸水关的底阀也属于止回阀类。止回阀是能自动阻止流体倒流的阀门。止回阀的阀瓣在流体压力作用下开启,流体从进口侧流向出口侧。当进口侧压力低于出口侧时,阀瓣在流体压差、本身重力等因素作用下自动关闭以防止流体倒流。止回阀关闭时,会在管路中产生水锤压力,严重时会导致阀门、管路或设备的损坏,尤其对于大口管路或高压管路,故应引起止回阀选用者的高度注意。在管线中不要使止回阀承受重量,大型的止回阀应独立支撑,使之不受管系产生的压力的影响。安装时注意介质流动的方向应与阀体所票箭头方向一致
进口不锈钢止回阀系列产品可做到PN420的压力,DN1200以上的口径,根据壳体和密封材料不一样,可以使用任何工作介质和和任何工作温度范围,适用于水、蒸汽、气体、腐蚀性介质、食品、油品、药品等。
Product introduction of imported stainless steel check valve:
Laine of the United States -- the opening and closing parts of imported stainless steel check valves are opened or closed by medium flow and force to prevent medium backflow. The valve is called check valve. The check valve is an automatic valve, which is mainly used on the pipeline with one-way flow of medium. The medium is only allowed to flow in one direction to prevent accidents. Check valve is also called one-way valve or check valve. The bottom valve of water pump suction is also a check valve. Check valve is a valve that can automatically prevent fluid backflow. The disc of the check valve opens under the action of fluid pressure, and the fluid flows from the inlet side to the outlet side. When the pressure at the inlet side is lower than that at the outlet side, the valve disc will automatically close under the action of fluid pressure difference, its own gravity and other factors to prevent fluid backflow. When the check valve is closed, water hammer pressure will be generated in the pipeline. In serious cases, it will cause damage to the valve, pipeline or equipment, especially for large mouth pipeline or high-pressure pipeline, so it should attract the high attention of the check valve selector. Do not make the check valve bear weight in the pipeline. The large check valve should be supported independently to prevent it from being affected by the pressure generated by the pipe system. During installation, pay attention that the direction of medium flow shall be consistent with the arrow direction of the valve body
The imported stainless steel check valve series products can achieve the pressure of pn420 and the diameter above DN1200. According to the different shell and sealing materials, any working medium and any working temperature range can be used. It is suitable for water, steam, gas, corrosive medium, food, oil products, drugs, etc.
进口不锈钢止回阀性能参数:
1、公称通径:DN15-DN3000,1/4-100寸
2、公称压力:PN0.6-PN320;Class150LB-2500LB;JIS10K-20K
3、适用温度:-196℃-550℃
4、阀体材质:不锈钢304、316、316等
5、密封面:不锈钢304、316、316
6、垫片:钢带石墨参缠绕、聚四氟乙烯
7、连接方式:法兰
8、使用介质:水、蒸汽、油品等
进口不锈钢止回阀产品优点:
1.流体阻力小
2.动作可靠
3.减少水锤压力
4.可适用大中小口径管路上
5.可水平、立式安装
6.有弹性,密封性能好
进口不锈钢止回阀产品优点:
1. 采用内装摇臂旋启式结构,所有启闭件都装于阀体内部,不穿透阀体
2. 摇臂和阀瓣连接处采用球面连接的结构,使得阀瓣在360°范围内有一定的自由度,有适当的微量位置补偿
3. 阀门密封副的密封面堆焊合金钢或硬质合金,即使用在有细粒的介质中亦不会因冲蚀而很快磨损
4. 用于较高压力阀门的阀体与阀盖的连接采用压力自紧式密封结构,楔形密封环与四开环组合,压力越高密封越可靠
进口不锈钢止回阀安装方式:
一、旋启式止回阀:旋启式止回阀的阀瓣呈圆盘状,绕阀座通道的转轴作旋转运动,因阀内通道成流线型,流动阻力比升降式止回阀小,适用于低流速和流动不常变化的大口径场合,但不宜用于脉动流,其密封性能不及升降式。旋启式止回阀分单瓣式、双瓣式和多半式三种,这三种形式主要按阀门口径来分,目的是为了防止介质停止流动或倒流时,减弱水力冲击。
二、升降式止回阀:阀瓣沿着阀体垂直中心线滑动的止回阀,升降式止回阀只能安装在水平管道上,在高压小口径止回阀上阀瓣可采用圆球。升降式止回阀的阀体形状与截止阀一样(可与截止阀通用),因此它的流体阻力系数较大。其结构与截止阀相似,阀体和阀瓣与截止阀相
同。阀瓣上部和阀盖下部加工有导向套简,阀瓣导向简可在阀盏导向简内自由升降,当介质顺流时,阀瓣靠介质推力开启,当介质停流时,阀瓣靠自垂降落在阀座上,起阻止介质逆流作用。直通式升降止回阀介质进出口通道方向与阀座通道方向垂直;立式升降式止回阀,其介质进出口通道方向与阀座通道方向相同,其流动阻力较直通式小。
三、碟式止回阀:阀瓣围绕阀座内的销轴旋转的止回阀。碟式止回阀结构简单,只能安装在水平管道上,密封性较差。
四、管道式止回阀:阀瓣沿着阀体中心线滑动的阀门。管道式止回阀是新出现的一种阀门,它的体积小,重量较轻,加工工艺性好,是止回阀发展方向之一。但流体阻力系数比旋启式止回阀略大。
五、压紧式止回阀:这种阀门是做为锅炉给水和蒸汽切断用阀,它具有升降式止回阀和截止阀或角阀的综合机能。