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Butterfly valve design and selection(2)
3 Optional 3.1 Type The butterfly valve has different structures such as single eccentric, inclined plate type, center line type, double eccentric and triple eccentric. The medium pressure acts on the valve shaft and bearing through the butterfly plate. Therefore, when the flow resistance of...Read more -
Butterfly valve design and selection(1)
1 Overview The butterfly valve is an important device in the water supply and drainage pipeline system. With the advancement of industrial technology, different requirements are put forward on the structure and performance of the butterfly valve. Therefore, the type, material and con...Read more -
Butterfly valve applicable working conditions and materials (2)
1. Generally, in throttling, regulating control and mud medium, the structure is required to be short in length and fast in opening and closing speed (1/4 revolution). Low pressure cut-off (small pressure difference), butterfly valve is recommended. 2. The butterfly valve can be used when t...Read more -
Butterfly valve applicable working conditions and materials (1)
There are many types of butterfly valves, including quick cut-off and continuous adjustment. Mainly used for liquid and gas low-pressure large-diameter pipelines. It is suitable for occasions where the pressure loss requirements are not high, flow adjustment is required, and the ope...Read more -
What is butterfly valve ?
Butterfly valves can be divided into pneumatic butterfly valves, electric butterfly valves, manual butterfly valves, etc. The butterfly valve is a valve that uses a circular butterfly plate as an opening and closing part and rotates with the valve stem to open, close and adjust the fluid pas...Read more -
The Advantages and disadvantages of butterfly valve
The Advantages and disadvantages of butterfly valve 1. Advantages of butterfly valve 1. It is convenient and quick to open and close, labor-saving, low fluid resistance, and can be operated frequently. 2. Simple structure, small size and light weight. 3. Mud can be transported, with the lea...Read more -
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
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