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Butterfly valve installation and maintenance
1. During installation, the valve disc should be stopped in the closed position. 2. The opening position should be determined according to the rotation angle of the butterfly plate. 3. For the butterfly valve with bypass valve, the bypass valve should be opened before opening. 4. The installat...Read more -
The advantages and shortcomings of gate valve
Advantages of gate valve: (1) Small fluid resistance Because the internal medium channel of the gate valve body is straight, the medium does not change its flow direction when flowing through the gate valve, so the fluid resistance is small. (2) The opening and closing torque is small, and t...Read more -
The working principle of gate valve
Gate valve refers to a valve in which the closing member (gate) moves in the vertical direction of the centerline of the passage. The gate valve can only be used for fully open and fully closed shut-off in the pipeline, and cannot be used for adjustment and throttling. Gate valve is a kind of...Read more -
Gate valve body structure
Gate valve body structure 1. The structure of the gate valve The structure of the gate valve body determines the connection between the valve body and the pipeline, the valve body and the bonnet. In terms of manufacturing methods, there are casting, forging, forging welding, casting welding and ...Read more -
The principle of selection of flat gate valve
The principle of selection of flat gate valve 1. For oil and natural gas pipelines, use flat gate valves with single or double gates. If you need to clean the pipeline, use single or double gate open-rod flat gate valve with diversion holes. 2. For the transportation pipeline and storage equipme...Read more -
The advantages and shortcomings of flat gate valve
The advantages of flat gate valve The flow resistance is small, and its flow resistance without shrinking is similar to that of a short tube. The flat gate valve with diversion hole can be directly used for pigging when installed on the pipeline. Since the gate slides on the two valve seat surfa...Read more -
Features and Applicable occasions of flat gate valve
The flat gate valve is a sliding valve whose closing member is a parallel gate. The closing part can be a single gate or a double gate with a spreading mechanism in between. The pressing force of the gate to the valve seat is controlled by the medium pressure acting on the floating gate or the fl...Read more -
Knife gate valve performance and installation
Knife gate valve has the advantages of simple and compact structure, reasonable design, light material saving, reliable sealing, light and flexible operation, small size, smooth passage, small flow resistance, light weight, easy installation, easy disassembly, etc. It can work at a working press...Read more -
The difference between rising stem gate valves and non-rising stem gate valves
The difference between rising stem gate valves and non-rising stem gate valves Gate valve can be divided into: 1, rising stem gate valve: stem nut in the valve cover or bracket, open and close the gate, with rotary stem nut to achieve the rise and fall of the stem. This structure is advantageous...Read more -
What are the structural features of gate valves
Gate valve has the characteristics of small fluid resistance, applicable pressure, temperature range, etc., is one of the most commonly used cut-off valve, used to cut off or connect the medium in the pipeline. The diameter shrinkage can reduce the size of the parts, reduce the force required f...Read more -
Introduction of several types of gate valves
Introduction of several types of gate valves (1) Wedge type single gate valve The structure is simpler than the elastic gate valve; ② At high temperature, sealing performance is not as good as elastic gate valve or double gate valve; ③ Suitable for high temperature medium which is easy t...Read more -
Knife type gate valve performance and installation
Knife gate valve has the advantages of simple and compact structure, reasonable design, light material saving, reliable sealing, light and flexible operation, small volume, smooth channel, small flow resistance, light weight, easy installation, easy disassembly and so on. It can work normally und...Read more
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