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About UsQingdao Power Station Valve Co., Ltd. (formerly known as Qingdao Power Station Valve Factory) was established in September 1965 and is located in the coastal city of Qingdao. It is a professional manufacturing factory designated by the former Ministry of Mechanical and Electrical Affairs as a high-temperature and high-pressure valve product for power station boilers.
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ProductsThe product range covers gate valves, globe valves, check valves, safety valves, control valves, blocking valves, throttle valves, butterfly valves, high and low pressure bypass valves, high pressure three-way valves, temperature and pressure reduction devices, etc. for power plant boilers and steam turbine pipelines with subcritical and ultra (ultra) critical parameters.
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BlogThe company is an expert unit of the National Boiler and Pressure Vessel Standards Committee, leading or participating in the development of more than ten valve manufacturing and inspection standards, and possessing over twenty product technology patents.
Valve blockage issues in water pressure testing: How to address and handle
Recently, with the increase in various pipeline and valve installation and maintenance projects, the issue of valve blockage during hydrostatic testing has gradually attracted attention from within and outside the industry. After the completion of a pipeline system, rigorous hydrostatic testing must be conducted to ensure its safe operation. During this process, if valve blockage is not handled properly, it could lead to serious consequences. So, what exactly is valve blockage during hydrostatic testing? And how should we deal with it?
Recently, with the increase in various pipeline, valve installation, and maintenance projects, the issue of valve blockage during hydrostatic tests has gradually garnered attention both within and outside the industry. After the completion of a pipeline system, strict hydrostatic tests are essential to ensure its safe operation. During this process, improper handling of valve blockage can lead to severe consequences. So, what exactly is valve blockage in hydrostatic tests, and how should we address it?
Hydrostatic testing, an important method for inspecting the strength and sealing performance of pipeline systems, involves injecting high-pressure water into the pipeline to check the tightness of pipes and valves. During this process, if a valve is blocked or poorly sealed, the so-called "valve blockage" phenomenon will occur. Valve blockage not only affects the accuracy of hydrostatic testing but can also pose safety hazards.
There are various reasons for valve blockage, including manufacturing defects, improper installation, and wear caused by long-term use. Before conducting a hydrostatic test, a comprehensive inspection of the valves must be performed. If valve blockage is discovered, the test should be immediately stopped, the cause analyzed, and appropriate measures taken to address it.
When facing valve blockage issues, the primary task is to take preventive measures. Selecting high-quality, reputable valve products is crucial. During installation, operations should strictly follow specifications to ensure that valves are installed correctly and sealed properly. Furthermore, regular maintenance of valves and timely replacement of severely worn components are effective ways to reduce valve blockage.
Once valve blockage occurs during a hydrostatic test, professional personnel should be immediately organized to investigate the cause. If the blockage is due to an issue with the valve itself, the valve should be replaced promptly; if it's caused by improper operation, the test plan or operating method should be adjusted. In summary, a swift response, accurate judgment, and proper handling are essential.
The issue of valve blockage in hydrostatic testing cannot be ignored. Only by strengthening prevention, standardizing operations, and promptly maintaining can we ensure the safe and stable operation of pipeline systems. We hope that industry professionals will pay attention to this issue and jointly contribute to the healthy development of the industry.
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