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Fluorine-lined butterfly valve vs metal seated butterfly valve
The difference and selection of fluorine-lined butterfly valve and metal seated butterfly valve As one of the most commonly used valves in process pipelines, butterfly valves are not only simple in structure, easy to operate, and equipped with different driving devices, but also can form a variety of control methods, such as electric butterfly valves, […]
The difference between globe valve and gate valve
The difference between globe valve and gate valve, The difference between gate valve and globe valve From the structure: The length of the gate valve is shorter than that of the stop valve, and the height is higher than that of the stop valve. The installation of the rising stem gate valve should pay attention […]
Butterfly valve use principle and installation instructions
Butterfly valve use principle and installation instructions The relationship between the opening of the butterfly valve and the flow rate basically changes linearly. If it is used to control flow, its flow characteristics are also closely related to the flow resistance of the piping. For example, two pipelines are installed with the same valve diameter […]
Gate valve model meaning and representation method
Gate valve model representation method | Gate valve model meaning Explanation of the meaning of the gate valve model: Gate valve is one of the more common types of shut-off valves. It is generally suitable for full-open or full-close two-position operation control. It is mainly used to close the medium in the pipeline. It is […]
Butterfly valve structure principle and application analysis
Butterfly valve (also called flap valve) is a kind of regulating valve whose closing part is circular disc or disc, mainly composed of valve body, valve stem, disc and sealing ring. The valve body is cylindrical with short axial length and built-in butterfly plate. The butterfly plate of the butterfly valve is installed in the […]
Principle of Globe Valve (Figure)
Globe Valve is also called stop valve, shut-off valve. The opening and closing part of the globe valve is a plug-shaped valve disc, the sealing surface is flat or cone, and the valve disc moves linearly along the centerline of the fluid. The movement form of the valve stem includes a lifting rod type (the […]
The difference between a float valve and a ball valve
The difference between a float valve and a ball valve, the principle of the float valve | diagram Float valve is a product of liquid level measurement and control. It is constructed by several main components such as valve body, piston, connecting rod and floating ball, and uses the principle of leverage to make the […]
Electric globe valve selection and application
Electric shut-off valve selection, Electric shut-off valve application, globe valve also named shut off valve or cut off valve. Advantages of electric shut-off valve: Once the electric shut-off valve is in the open state, there is no contact between its valve seat and the sealing surface of the disc, so its sealing surface is less […]
Ball valve installation and maintenance methods
Ball valve installation: 1. It must be confirmed that the pipeline and valve have been cleaned before operation. 2. The actuator operation of the valve drives the valve stem to complete rotation according to the size of the input signal: when it rotates 1/4 turn (900) in the forward direction, the valve is closed. When […]
How many types of gate valves?
Types and classifications method of gate valves Gate valve, also called slab valve, is mainly composed of valve body, bonnet, gate, valve stem, valve seat and sealing packing. It is one of the most common valve types in isolation valves. The main purpose of the gate valve is to cut off the fluid. For this […]