Installation instructions for proportional pressure reducing valve
Classification:
Release Time：2020-08-07
Before installing the proportional relief valve, the pipeline should be flushed clean and a Y-filter should be installed in front of the valve. Small debris in the pipeline will cause leakage and failure of the pressure reducing valve, resulting in ultra-high static pressure of the pipe network behind the valve. Set a filter on the main pipe, pull out the plug, lead the drain pipe with valve to the sewage tank, and discharge the sewage in time. During the maintenance of proportional pressure reducing valves, a gate valve or butterfly valve must be installed before and after the proportional pressure reducing valve to cut off the water supply.
1. Installationproportional pressure reducing valveBefore, the pipeline should be flushed clean and a Y-type filter should be installed in front of the valve. Small debris in the pipeline will cause leakage and failure of the pressure reducing valve, resulting in ultra-high static pressure of the pipe network behind the valve. Set a filter on the main pipe, pull out the plug, lead the drain pipe with valve to the sewage tank, and discharge the sewage in time.
2. In the maintenanceproportional pressure reducing valveDuring this period, a gate valve or butterfly valve must be installed before and after the proportional pressure reducing valve to cut off the water supply.
3. The proportional pressure reducing valve should be installed vertically. Its installation instructions say that it can be installed vertically or horizontally, but when installed horizontally, the eccentric wear of the lower part will be caused by gravity, so it should be installed vertically and installed in the direction shown by the arrow on the valve body. Jiangyin Building Fire Hydrant Automatic Sprinkler Systemproportional pressure reducing valveVertical installation, the decompression effect is obvious, the function is normal.
4. In order to ensure the uninterrupted water supply of fire water supply in high-rise buildings, the proportional pressure relief valve group should be designed into two parallel valve groups with the same diameter. And the front and rear pipe diameters should be the same, so that maintenance and replacement will not affect the water supply.
5. The proportional pressure reducing valve in the fire water supply system shall not be provided with a bypass pipe. During the construction of the pressure reducing valve of the fire hydrant system of Jiangyin Building, a bypass pipe was installed at the beginning. After about one and a half years of use, it was found that the pressure gauge value behind the valve was the same as that in front of the valve. When the test valve is opened, the test pressure display is normal. After inspection, it was found that the aging of the valve rubber lining on the bypass pipe caused leakage, resulting in abnormal static pressure and normal pressure. Therefore, in order to ensure the reliability of the water supply of the fire water supply system, I think the bypass pipe should not be set.
6. The pressure gauge should be installed inproportional pressure reducing valveBefore and after, it can be directly used to observe the pressure changes before and after the pressure reducing valve, and monitor the pressure reducing effect and working condition of the pressure reducing valve.
7. High-rise building fire hydrant system should be set up after the proportional pressure relief valve flexible rubber joints. On the one hand, the pressure reducing valve is easy to install and disassemble, and can also play the role of expansion joint.
Related News
2026/02/28
Contact Information
+86 27-8970 8339
Address: No.5, Zhengjie, Shuangliu Street, Xinzhou District, Wuhan City, Hubei Province