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Anti blocking method for regulating valves (1) Cleaning method Welding slag, rust, slag, etc. in the pipeline cause blockage or jamming in the throttle opening, guide part, and balance hole of the lower valve cover, resulting in scratches and strains on the valve core surface and guide surface, as well as pressure marks on the sealing surface. This often occurs in the early stages of new systems b...
The bellows globe valve, also known as the bellows sealed globe valve, is designed with automatic roll welding to form a metal barrier between the fluid medium and the atmosphere, ensuring zero leakage of the valve stem. The internal structure of the bellows globe valve adopts a bellows structure, and the lower end of the stainless steel bellows is welded to the valve stem to prevent process fluid...
1. Known parameters 2 8-ton boilers produce steam, one used and one standby, so when calculating the sub-cylinder, we only consider the flow rate of 8t/h, the pressure of 10barg, we need to design a sub-cylinder, two inlet DN150, 7 outlet steam pipes, of which 3 DN150, DN125+DN100+DN80+DN50, 1 each. Second, the total cylinder diameter design is Based on the Pipe Size calculation formula (Pipe Size...
The working principle of a three-way ball valve is to rotate the valve to make the valve open or closed. Ball valves are lightweight, small in size, and can be made into large diameters. They are reliable in sealing, have a simple structure, and are easy to maintain. The sealing surface and spherical surface are often in a closed state, and are not easily eroded by media. They are widely used in v...
Steam trap, also known as steam trap, is mainly used to automatically remove non condensable gases such as steam condensate and air from heating equipment or steam pipelines, while preventing steam leakage. The working principle of this device is based on density differences and the characteristics of thermal expansion and contraction. Steam trap valve mainly consists of two parts: valve body and ...
Pressure reducing valves, safety valves, pressure stabilizing valves, and relief valves are all pressure valves, mainly due to functional differences. A pressure reducing valve is a device that reduces a medium with high pressure to a medium with low pressure. The characteristic of this valve is to maintain the outlet pressure and temperature values within a certain range while the inlet pressure ...
The valve is used to open and close the pipeline, control the flow direction, adjust and control the parameters of the transmission medium (temperature, pressure and flow) of the pipeline accessories. According to its function, it can be divided into shut-off valve, check valve, regulating valve and so on. The valve is a control component in the fluid conveying system, which has the functions of s...
Basic knowledge of solenoid valve 1. Electromagnetic valve working principle Solenoid valve is the use of electromagnetic principle to control the flow of fluid automation components. Its working principle is based on the suction and release of the solenoid, by changing the position of the valve spool to control the passage or direction of the fluid. When the coil is energised, an electromagnetic ...
The structure of the diaphragm valve form and general valves is very different, is a special form of cut-off valve, its opening and closing parts is a piece of soft material made of diaphragm, the valve body cavity and the valve cover cavity and drive parts separated, is now widely used in various fields. Commonly used diaphragm valves are rubber lined diaphragm valve, fluorine lined diaphragm val...
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