一、进口消声止回阀概述

进口消声止回阀，Silencing check valve，阀瓣采用弹簧加载，其快速关闭能有效的消除水锤，密封性能好，关闭无噪声。消声止回阀具有体积小、重量轻、流体阻力小，耐疲劳、寿命长等优点。适用于给排水管道，阀瓣采用进口两端中心轴导向，启闭灵活，可水平安装或垂直安装。

Silencing check valve, the valve disc is spring loaded, and its quick closing can effectively eliminate water hammer. The sealing performance is good, and there is no noise when closing. Silencing check valves have the advantages of small volume, light weight, low fluid resistance, fatigue resistance, and long service life. Suitable for water supply and drainage pipelines, the valve disc adopts center axis guidance at both ends of the inlet, with flexible opening and closing, and can be installed horizontally or vertically.

二、进口消声止回阀产品技术参数

公称压力：1.0～1.6MPa

公称通径：40～2000mm

适用介质：水及弱腐蚀性流体

适用温度：0～80℃

阀体材质：铸铁，球铁，铸钢，不锈钢

密封：丁腈橡胶

连接方式：法兰

三、进口消声止回阀产品特点

1、消声止回阀阀体内腔采用流线型设计，流量按100%设计，减少急弯、拐角、尖凸，从而减少流体的阻力。
2、消声止回阀阀瓣前后设计为锥形，使流体阻力大大减少，又减少了因紊流所产生的噪声。
3、瓣关闭的行程短，只有公称通径的1/4，减少了阀瓣的关闭时间，减少了水锤的产生。
4、消声止回阀阀使用弹簧加速阀瓣关闭速度、降低水锤产生。
5、消声止回阀阀瓣为空心薄壳结构，减少阀瓣的惯性，不但使阀瓣关闭时能迅速启动，也减少了关闭时的冲击噪声
6、消声止回阀可以垂直、水平、倾斜以及任何角度安装。

7、消声止回阀结构紧凑、零件少、体积少、重量轻、外型美观。
7、消声止回阀内外表面均喷涂环保涂层，确保产品的防腐蚀及安全性。

1. The inner chamber of the sound-absorbing check valve body adopts a streamlined design, with a flow rate of 100%, reducing sharp bends, corners, and protrusions, thereby reducing fluid resistance.

2. The front and back design of the sound-absorbing check valve disc is conical, greatly reducing fluid resistance and reducing noise caused by turbulence.

3. The closing stroke of the valve disc is short, only 1/4 of the nominal diameter, which reduces the closing time of the valve disc and reduces the generation of water hammer.

4. The soundproof check valve uses springs to accelerate the closing speed of the valve disc and reduce the generation of water hammer.

5. The sound-absorbing check valve disc is a hollow thin shell structure, which reduces the inertia of the disc. It not only allows the disc to start quickly when closed, but also reduces the impact noise when closed

6. The soundproof check valve can be installed vertically, horizontally, obliquely, and at any angle.

7. The soundproof check valve has a compact structure, fewer parts, less volume, light weight, and beautiful appearance.

7. The inner and outer surfaces of the soundproof check valve are coated with environmentally friendly coatings to ensure the corrosion resistance and safety of the product.

四、进口消声止回阀结构图