CHINA FACTORY PRESSURE REDUCING VALVE. SPECIAL DEVICE THAT AUTOMATICALLY REDUCES THE WORKING PRESSURE OF THE PIPELINE

Product name : CHINA FACTORY PRESSURE REDUCING VALVE. SPECIAL DEVICE THAT AUTOMATICALLY REDUCES THE WORKING PRESSURE OF THE PIPELINE

Product No. : 2022528145817

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The pressure reducing valve is a special device that automatically reduces the working pressure of the pipeline. It can reduce the higher water pressure in the pipeline before the valve to the level required by the pipeline after the valve. Pressure reducing valves are widely used in high-rise buildings, areas where the water pressure of the urban water supply network is too high, mines and other occasions to ensure that each water point in the water supply system obtains proper service water pressure and flow. Since the leakage rate and waste of water are almost proportional to the water pressure of the water supply system, the pressure reducing valve can improve the operating conditions of the system and potentially save water. According to statistics, the water saving effect is about 30%.

There are many structural types of pressure reducing valves. In the past, the common ones were diaphragm pressure reducing valves , inner spring piston pressure reducing valves , etc. The basic working principle of the pressure reducing valve is to reduce the water pressure by the local resistance of the flow channel in the valve to the water flow. In recent years, some new types of pressure reducing valves have appeared , such as fixed-ratio pressure reducing valves , whose structural principle is shown in Figure 14.2-2. The principle of constant ratio decompression is controlled by the water pressure ratio of the floating piston in the valve body, and the decompression ratio at the inlet and outlet is inversely proportional to the area ratio of the piston at the inlet and outlet. This kind of pressure reducing valve works smoothly without vibration; there is no spring in the valve body, so there is no concern of spring corrosion and metal fatigue failure; good sealing performance and no leakage, so it reduces both dynamic pressure (when water flows) and static pressure (flow rate is 0 hours); especially when decompression does not affect the water flow.

The pressure reducing valve usually has various specifications such as DN50~DN100. The working pressure before and after the valve is <1MPa and 0.1~0.5MPa respectively, and the pressure regulation range error is ±5%~10%.