When selecting the valve model, many users do not know how to select the electric ball valve and the electric gate valve, and do not know the difference between the electric ball valve and the electric gate valve. Here are some ways to help you choose:
The difference between an electric ball valve and an electric gate valve
There is a gate in the valve body that is perpendicular to the flow direction of the medium, adjusting the height of the gate and regulating the flow of the fluid. Gate valves are normally closed slower. The main control valve used in the pipes of heating pipes and water supply. Electric ball valves have been widely used in petroleum, chemical, power generation, paper making, atomic energy, aviation, rocket and other departments, as well as People's Daily life.
The advantage of gate valve is small resistance, close precision, no water hammer sign, widely used in various liquid and gas cut-off valves. It also has certain regulating function, but when the part is open, the gate is easy to get wet, and the fluid flow will cause the alarm to vibrate, and the sealing surface will be easily worn.
The blemishes of the electric gate valve are complex in structure, and the price is more expensive, which is not easy to fix.
Therefore, it is not suitable for the pipe that contains fibrous or solid material in the fluid. It is used in air, steam and oil conveying pipes as well as valves for vent and low silk system.
An electric gate valve is one of the most commonly used cut-off valves. It is important to connect the medium in the pipeline and not regulate the flow of the medium. The valve is suitable for pressure, temperature and aperture range, especially for medium and large diameter piping.
The electric ball valve USES an intermediate aperture sphere as the valve heart, rotating the ball control valve opening and closing. Electric ball valves are used in petroleum refining, long-distance pipeline, chemical industry, paper making, pharmaceutical, water conservancy, electricity, municipal, steel and other industries.
The difference between an electric ball valve and an electric gate valve
Electric ball valve has simple structure, electric ball valve and globe valve compared with light weight, the structure is simple, and its group weight is very light, so it can play a good results in low temperature medium system; Sealing surface processing, sealing, convenient operation, quick switch, startup and shutdown time is very short, able to make the test system for rapid optimization, and in the process of startup and shutdown of the valve, will not impact.
But can not be used to adjust flow, suitable for high voltage (up to 320 tables) pressure pipes, at present, is restricted by sealing material, can only be used under 200 ℃, can also be used for suspension and large variety of medium viscosity. And its adjustment performance is lower than the globe valve, especially the pneumatic valve (or electric valve).