A ball valve, invented in the 1950s, is just a valve with a spherical disc. With the rapid development of technology and the ceaseless improvement of processing technique and product structure, the ball valve has been one kind of main valves in recent years. Now it is applied by having an increasing speed in the home and abroad. The ball valve is widely utilized in different industries, such as petroleum refining, long-distance transport pipes, chemical, paper making, pharmacy, water treatment system, electricity and so on.
A ball valve, one form of quarter turn valve, is fairly literally a ball put into a passageway through which fluid flows. The ball includes a hole, by that your valve opens and closes. Once the ball lies Ball Valve in this manner where in actuality the hole runs exactly the same direction because the passageway, the fluid simply flows through the hole, and the valve is open. However, once the ball lies in this manner where in actuality the hole is perpendicular to the passageway, the fluid cannot go through, and the valve is closed. The ball is controlled from outside the valve, often with a handle that may be turned 90 degrees, or a fraction turn, back and forth for opening and closing the valve. Therefore, ball valve is a wonderful selection for shutoff applications.
But with the development of technology, additionally it has the functions of throttling-control and fluid-control.
The ball valve has the following main features. What comes first is that the it is very versatile since it supports pressures up to 700 bars and temperatures up to 200°C and sizes typically range from 0.5 cm to 30 cm. secondly, the ball valve has this type of simple structure that it’s easy to use and repair.
Thirdly, the seal and the ball in many cases are in close state so your ball valve is very reliable and difficult to be eroded by the working medium. Last although not least, with the PTFE valve seat ring the ball valve is fairly durable and usually work to accomplish perfect shutoff even with years of disuse. Are you aware that types, there are five general body types of ball valves: single body, three-piece body, split body, top entry, and welded. The difference one of them is dependant on the way the items of the valve-especially the casing which contains the ball itself-are manufactured and assembled. The valve operation is exactly the same in each case.