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Working principle and movement mode of gate valve
The gate valve is a gate for opening and closing. The movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate valve is sealed through the contact between the valve seat and the […]
The difference between globe valve and check valve
With the development of high-tech industry, various valves are often used in daily life. Today we will understand the difference between globe valves and check valves. The difference between globe valve and check valve: 1. Check valve and stop valve are not the same thing, the difference between the two is mainly that the structure […]
Electric globe valves’ structural features and installation attention
Structural features of electric globe valve: 1. Open and close without friction. This function completely solves the problem of traditional valves affecting the sealing due to mutual friction between the sealing surfaces. 2. Top-mounted structure. The valves installed on the pipeline can be directly inspected and repaired online, which can effectively reduce device shutdown and […]
Characteristics and working principle of electric globe valve
Features of electric globe valve: The fluid resistance is small, and its resistance coefficient is equal to that of a pipe section of the same length. Simple structure, small size and light weight. Electric globe valve It is tight and reliable. The sealing surface material of the gate valve is widely used plastic, and it […]
Comparison of bellows globe valve and ordinary globe valve
Comparison of bellows globe valve and ordinary globe valve: 1. Double sealing design (bellows + packing) If the bellows fails, the stem packing will also avoid leakage and meet international sealing standards. 2. There is no fluid loss, reducing energy loss and improving plant equipment safety. 3. Long service life, reduce maintenance times and lower […]
Classification of the globe valves-(2)
According to the classification of purposes, the globe valve can be divided into the following types: The fluorine-lined stop valve: it is suitable for various concentrations of aqua regia, sulfuric acid, hydrochloric acid, hydrofluoric acid and various organic acids, strong acids, strong oxidants, and various concentrations of strong alkali organic solvents and other Use on […]
Classification of the globe valves-(1)
According to the channel direction, the globe valve is devided into 4 types: 1) Straight-through globe valve. 2) Direct flow stop valve: In direct flow or Y-shaped stop valve, the flow passage of the valve body is in a diagonal line with the main flow passage, so that the damage degree of the flow state […]
The working principle and characteristics of the globe valve
The globe valve is a tool that relies on the pressure of the valve stem to make the sealing surface of the disc and the sealing surface of the valve seat tightly fit to prevent the flow of the medium. It is a forced sealing valve and is one of the most widely used valves. […]
Features and working principle of silent check valve
Silent check valve refers to a valve that automatically opens and closes the disc depending on the flow of the medium itself to prevent the medium from flowing back. It is also called check valve, one-way valve, silence check valve, reverse flow valve, and back pressure valve. Check valve is a kind of automatic valve, […]
Y type ball check valves’ work theory, construction feature, advantage
1. Overview of ball check valve: Ball type check valve is widely used in petroleum, chemical and electric heating boilers and other devices. It is mainly used to prevent the reverse flow of the medium in the pipeline and protect the safe operation of the equipment. It is an ideal non-return device for pipelines. However, […]