1. Labor-saving operation: the ball is supported by the upper and lower bearings to reduce friction and eliminate the excessive torque caused by the huge sealin...
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Problems in the use of vacuum butterfly valves? We already know that vacuum butterfly valves have many advantages, such as compact structure, light weight, easy installation, etc., but there are many things, and there will be relatively shortcomings....
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The driving part of the electric dark lever knife gate valve adopts a multi-turn electric device to drive and control the opening and closing of the valve. The operator can control the valve remotely in the control room or manually operate it on site. The...
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With the development of my country's capital construction, large-scale projects have been put into construction and implementation, resulting in an increasing number of valves for power, petroleum, chemical, urban water supply, and drainage systems, espe...
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Problems in the use of the vacuum butterfly valve? We already know that the vacuum butterfly valve has many advantages, such as compact structure, light weight, easy installation, etc., but there are many things, and there will be relatively shortcomings....
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According to the operation mode: it can be divided into handle butterfly valve, worm gear butterfly valve (gear box butterfly valve), electric butterfly valve, pneumatic butterfly valve, hydraulic butterfly valve, etc....
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Bronze, aluminum bronze and nickel-aluminum bronze ball valves are mainly used for severe working conditions that need to overcome strong corrosive environments, such as desalination platforms, various types of ships, warships, submarines, offshore drilli...
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The butterfly plate of the all-metal bidirectional pressure butterfly valve realizes no sliding friction and no jamming between the butterfly plate sealing ring and the sealing surface of the valve seat during the opening and closing process. The pressure...
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It can be said that the problem of internal leakage of the two-way pressure butterfly valve has troubled many people, but as long as it occurs, it is basically replaced with a new two-way pressure butterfly valve. Few people try to solve it. This kind of...
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The electric three-way control valve has two types: confluence and shunt. It consists of an electric actuator and three-way confluence or three-way shunt adjustment. It is powered by a power source and receives a unified standard signal of 0～10mA DC or 4-...
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The 3 Ways Ball Valve Stainless Steel has two types of confluence and shunt. It is composed of an electric actuator and three-way confluence or three-way shunt adjustment. It is powered by a power source and receives a unified standard signal of 0～10mA DC...
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The gap between butterfly valve manufacturers and foreign counterparts is manifold, and this unfavorable situation is difficult to change in the short term. It is worth noting that, in the face of the scattered market pattern of my country's valve manufa...
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The gate of the gate valve moves linearly with the valve stem. The valve stem that only lifts and does not rotate is called a lift valve stem. Because the valve stem extends above the valve body when the flange butterfly valve is opened, it is also called...
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In order to prevent the medium from flowing back, check valves should be installed on the equipment, devices and pipelines; check valves are generally suitable for clean media, not suitable for media containing solid particles and high viscosity; generall...
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All metal two-way pressure butterfly valve is mainly used in high, medium, low pressure, high temperature and low temperature pipelines for interception and adjustment. It is widely used in electric power, petroleum, chemical industry, metallurgy, energy,...
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The sealing principle and structural features of the triple offset butterfly valve? The triple eccentric hard seal butterfly valve has a two-way bubble-free tight closing performance. This geometric shape ensures that the disc seal is only in contact with...
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How to choose valve according to flow characteristics? A technician from Shanghai Dongbao Valve Manufacturing Co., Ltd. said: The shape of the valve opening and closing parts and the valve flow channel give the valve the flow characteristics. Consider thi...
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As we all know, API609 has actually become the international standard for valves used in important industrial pipelines. The Dongbao valve is designed and manufactured in strict accordance with the new version of API609 specifications. What’s more valuabl...
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With the continuous development of valve technology, the performance of various valves has also been greatly improved, and new types of valves are constantly appearing. We need to continue to learn new technologies and new experiences and use them in prod...
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It has been more than 50 years since the introduction of the triple offset butterfly valve, and the application of butterfly valves has spanned multiple industries. The original butterfly valve is only used for the interception and connection of water med...
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The spatial structure of the butterfly plate of the triple offset butterfly valve is more complicated. The force and displacement distribution of the butterfly plate directly affects the sealing of the butterfly valve and the opening and closing of the va...
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The development and application of triple offset butterfly valve? In many Asia-Pacific regions, due to the limitations of the domestic valve design and manufacturing level and the influence of traditional textbooks, there is still a great prejudice agains...
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The characteristics of Dongbao ball valve and how to use it? The technicians of Shanghai Dongbao Valve said: The opening and closing parts (sphere) of the ball valve are driven by the stem and rotate around the axis of the ball valve. It can also be used...
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The butterfly valve is simple in structure, small in size, light in weight, and its components are relatively small. A few key parts can constitute a butterfly valve. It is also very convenient to open. You only need to select the switch to ninety degrees...
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It has been more than 50 years since the triple offset butterfly valve was introduced, and it has been continuously developed for more than 50 years. The application of butterfly valves has spanned many industries....
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