In most cases, turning the ball valve counterclockwise will open the valve. If it is clockwise, it is generally closed. If it is a ball valve with a hand wheel, turning it to the right is opening, and turning it to the left is closing. For some special ball valves, it will mark the specific switch direction arrow on the switch knob, and generally there will be no mistakes as long as it is rotated according to the arrow during operation.
What are the types of ball valves
1.Floating ball valve
The main feature of this ball valve is that it can be suspended. There is a ball on it. Through the installation position and the pressure of the medium, it can be pressed tightly at the outlet to achieve a sealing effect. Therefore, the sealing of this floating ball valve is It will be relatively small, and the overall structure of this ball valve will be relatively simple, so the installation and assembly will be more convenient, but it should be noted that when the ball releases pressure, it will transfer the load pressure to the outlet sealing ring, so when installing It is also necessary to consider whether the sealing ring material can withstand the load pressure under this medium.
2.Fixed ball valve
In layman’s terms, it means that the sphere of this ball valve is fixed, and it is not easy to move even under the action of pressure. However, if the pressure of the medium is encountered after installation, the valve seat of this ball valve will move. During the movement, the upper ball will be tightly squeezed at the sealing port to ensure its tightness. This ball valve is relatively It is suitable for use in some high-pressure and large-diameter valves. Because its upper and lower bearing operation button distance is relatively small. At present, this kind of ball valve has gradually formed an oil-sealed ball valve through subsequent improvement, which forms an oil film through the lubricating oil on the surface to increase the sealing performance.
3.Elastic ball valve
The sphere of this ball valve has a certain degree of elasticity, and metal materials are added to its valve seat sealing ring and sphere, so its sealing pressure is relatively large, which is aimed at the environment medium in which it is placed. If the pressure is not enough, but you want to achieve a relatively strong sealing effect, you can use this kind of ball valve. At present, this kind of ball valve is mostly used in some high-temperature and high-pressure media. This kind of ball valve has a relatively small gap between the ball and the valve seat, so the friction on the sealing surface is reduced, thereby controlling the distance between the operating knobs.
4.Electric lining float valve
The connection of this kind of ball valve is relatively simple, and the overall structure is relatively compact, its overall size is relatively small, and its weight is relatively light, so subsequent installation and fixing will be more convenient, and the stability will be relatively high. An intelligent regulating valve with high convenience, waterproof and rustproof, it can be installed at any angle.
Post time: Dec-29-2022
