Micro-resistance slow-closing butterfly check valve

The HH46X, HH48X, and HH49X silenced slow-closing check valve series produced by our company can be used in drainage pipes for clean water, sewage, seawater and other media. They can not only prevent the backflow of media, but also effectively limit destructive water hammer, ensuring The pipeline is safe to use. It has the characteristics of novel structure, small size, light weight, low fluid resistance, reliable sealing, smooth opening and closing, wear resistance, long service life, oil pressure and slow closing are not affected by the medium, and is effective in energy saving.

Disc check valve: A check valve in which the disc rotates around a pin in the valve seat. The disc check valve has a simple structure and can only be installed on horizontal pipelines, so its sealing performance is poor. Check valves can be divided according to their structure and installation method: the disc of the butterfly check valve is disc-shaped and rotates around the rotating axis of the valve seat channel. Because the channel in the valve is streamlined, the flow resistance is higher than that of the butterfly check valve. The check valve is small and suitable for large-diameter situations with low flow rates and infrequent changes in flow. However, it is not suitable for pulsating flow and its sealing performance is not as good as that of the lift type. Butterfly check valves are divided into three types: single-disc type, double-disc type and multi-half type. These three forms are mainly divided according to the valve diameter. The purpose is to prevent the medium from stopping the flow or backflow and weakening the hydraulic impact.