Types Of Ball Valve Seals
Three-piece ball valve consists of a housing, ball, and an external piston. The housing of a three piece ball valve has the outer threads and piston sleeve that is in contact with the incoming supply. The housing may have one or more inner threads. If you have any sort of concerns pertaining to where and the best ways to utilize www.shunchengvalve.com, you could contact us at the site. The size of the inner threads depends on the type of ball used for the valve. Ball valve with linear transmission mechanism operates the same way as a two-piece ball-type valve.
The working principle of the three piece ball valves is to create a valve block or unblocked when rotating the innermost valve. In this system, the ball or other movable object is firstly installed inside the pipe stem; then, it is aligned with the pipe threads, and finally, it is forced through the pipe by turning on and off the valve gears in the pipe stem. The three pieces of movable object can rotate in three axes, clockwise and counterclockwise. In some types of three-piece ball valve, two pieces are included, but they are not generally needed for the application.
Commonly used in gas and oil industry, two-piece ball valves are widely used as valves in the water industry and as valves in the gas and oil pipelines. As with two-piece ball valves, a pre-set timing mechanism is needed for two-piece ball type. A one-way valve is designed for self-contained protection against sudden internal pressure that is generated within the pipe system. On the other hand, a two-way valve is specially designed for protecting the discharge of vapor from water or gas pipelines.
Commonly found in the combustion areas, three-piece ball is usually used with seat tee seal, seat flange seal, and seat finish seal. When these parts are installed, the ball comes into contact with the seat or tee sealing area. Here, the three pieces of ball make an open channel through which the liquid or gaseous stream flows through the seat.
Two-piece ball is made up of a threaded seat and a threaded hand wheel, which make it possible to increase the length of the stem and reduce the size of the channel. In this case, the seat and hand wheel make an almost identical size through which the ball can be accommodated. This type of valve seats with one hand wheel and provides an increasing amount of flow capacity as the length of the valve stem is increased. On the other hand, the term "stem seal" refers to the part of a valve stem that is located behind the seat. The "seat finish" refers to the sealing surface that surrounds the ball.
These types of ball valves can be utilized to control the hydraulic pressure that comes into contact with any material in the pipe like the fluid, oil or coolant. They are ideal for control of the hydraulic pressure, because they allow for easy movement between the inside and outside the pipe. It also allows for controlled release of the pressure, so that the flow is consistent. Most of these ball valves are made out of stainless steel, because the material does not rust when exposed to the elements of air or moisture. However, there are also ball valves that are made from plastic and they too are durable and long-lasting. Regardless of which type of ball valve you prefer, they are ideal for controlling the hydraulic pressure.
