A plug valve is a type of valve that has been in use for over a century. It is a simple and reliable valve that is used to control the flow of fluids in pipelines. The design of the plug valve consists of a cylindrical or conical plug that rotates inside the valve body to open or close the flow passage. A plug valve has several advantages over other types of valves. It has a low-pressure drop, which means that it does not impede the flow of fluids through the pipeline. It also has a tight seal,...
Plug Valves Read
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Solar valves At present, the utilization of solar energy mainly includes photovoltaic and photothermal power generation. The report released by the China Photovoltaic Industry Association predicts that from 2022 to 2025 showed that the average annual installed capacity of photovoltaics in the country will reach 85 million kilowatts to 101.25 million kilowatts, 10 times that of 2013, equivalent to the installed capacity of four Three Gorges power stations. In the field of photovoltaic power generation,...
Valves Used for Five Major Clean Energy Sources Read
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Spring check valves are designed to allow fluid to flow in one direction while preventing backflow. They consist of a valve body with an inlet and outlet port, a spring-loaded disc or ball that sits on the seat of the valve body, and a spring that keeps the disc or ball in place. The operation of spring check valves is simple yet effective. When fluid flows through the valve in the correct direction, it pushes the disc or ball away from the seat, allowing it to pass through. However, when there...
What Are the Requirements for Choosing Spring Check Valves? Read
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Actively and steadily promote carbon peaking and carbon neutrality based on China's energy resources. Plan and implement the carbon peaking step by step. Deeply promote the energy revolution. Strengthen the clean and efficient use of coal, and accelerate the planning and construction of a new energy system; actively participate in the global governance of climate change. To achieve carbon neutrality and carbon peaking, an important part is to transform from fossil energy-based energy...
Five Clean Energy and Opportunities for Valves Read
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1.1 Factory tests The factory test is carried out on the valve. The valve is installed vertically in the nuclear power plant. When the valve is sealed after the linkage test, the whole valve is lying horizontally. The test conditions are more stringent when the valve is installed horizontally, which can cover the requirements of the original machine running vertically. 1.2 Qualification tests (1) Tests for the cold state Purpose of the test: to verify the functional performance of the valve...
Testing Nuclear-grade Large-diameter Ultra-long Distance Gate Valves Read
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The test pressure of the valve Before leaving the factory, the valve will be pressure tested in accordance with relevant standards in the factory, including shell tests and sealing tests. The shell test is a pressure test of the entire valve shell formed by the connection of the valve body and the bonnet to test the sealing of the valve body and the bonnet and the pressure resistance of the entire shell including the connection between the valve body and the bonnet. The sealing test is used to check...
The Pressure of Water & Gas Discharge Valves in Thermal Power Plants Read
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A spring check valve refers to a valve whose opening and closing part is a circular valve disc and acts by its weight and medium pressure to block the backflow of the medium. It is an automatic valve and is also known as a one-way valve or isolation valve. The disc movement of a spring check valve is divided into lift types and swing types. The lift check valve has a similar structure to the globe valve, except that it lacks the valve stem to drive the disc. The medium flows from the inlet port...
Spring Check Valves Read
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1. The structure design of the valve The valve is a non-rising stem elastic wedge gate valve. The valve body and bonnet adopt integral casting. The body cover is connected by a middle flange and a bolt, which is sealed with 304L flexible graphite plates. The middle cavity of the body cover is an elliptical structure. A reinforcing rib is provided to make the valve bonnet’s external part have enough strength and rigidity (analyzed with ANSYS). The connection between the bonnet and the...
The Structure of Nuclear-grade Large-diameter Ultra-long Distance Gate Valves Read
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1. Overview With the continuous growth of China's energy demand, nuclear power has entered a new stage of both batch development and technological upgrading. However, facing great nuclear power market demand, there is a big difference in the technical level of nuclear-grade large-caliber ultra-long-distance gate valves for nuclear power plants in China compared with foreign countries, especially in the valve design, manufacturing, and test verification technology. Take the fuel transportation...
Designing Nuclear-grade Large-diameter Ultra-long Distance Gate Valves Read
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