Features Of Three-piece Ball Valve

3 Piece Ball Valve and gate valve are valves of the same type, the difference is that its closing piece is a sphere, which rotates around the center line of the valve body to open and close. Ball valves are mainly used in pipelines to cut off, distribute and change the flow direction of the medium. Three-piece ball valve is a new type of valve that has been widely used in recent years. Introduction Shanghai Capernaum, three-piece ball valve and gate valve are valves of the same type, the difference is that its closing piece is a sphere, which rotates around the center line of the valve body to open and close. Three-piece ball valve is mainly used in pipelines to cut off, distribute and change the flow direction of the medium. Three-piece ball valve is a new type of valve that has been widely used in recent years. Advantages Three-piece ball valve has the following advantages: 1. Small fluid resistance, its resistance coefficient is equal to that of the pipe section of the same length. 2. Simple structure, small size and light weight. 3. Tight and reliable, currently the sealing surface material of ball valves is widely used in plastics, with good sealing performance, and has also been widely used in vacuum systems. 4. Easy to operate, quick to open and close, just rotate 90° from full open to full closed, convenient for remote control. 5. Easy to maintain, the ball valve has a simple structure, the sealing ring is generally movable, and it is convenient to disassemble and replace...

The ball valve is a valve with a ball as a closing part. The main function of the ball valve is to cut off and connect the fluid in the pipeline. The ball valve has the characteristics of small fluid resistance, good sealing, quick switching, and high reliability.

The ball valve is mainly composed of parts such as the valve body, valve stem, ball and sealing ring. It is a 90° switch cut-off valve. It uses a handle or a drive device to apply a certain torque on the upper end of the valve stem and transmit it to the ball, so that it rotates 90°. The through hole of the ball coincides with or is perpendicular to the center line of the valve body channel to complete the full opening or full closing action. Commonly used ball valve structures are divided into two categories: floating ball valves and fixed ball valves.

The ball of the floating ball valve is freely supported on the sealing ring. Under the action of fluid pressure, it is in close contact with the downstream sealing ring to form a single-sided seal at the downstream end. It is suitable for low-pressure and small-caliber occasions.

The ball of the fixed ball valve has an upper and lower rotating shaft, which is fixed in the bearing of the ball. Therefore, the ball is fixed, but the sealing ring is floating. The sealing ring is pressed against the ball by the spring and fluid thrust to produce an upstream end seal. It is suitable for high-pressure and large-caliber occasions.

Direct-welded ball valves are suitable for underground facilities, offshore platforms and submarine equipment. Direct-welded ball valves use high-quality forged parts, which are integrated into one by single-layer welding in the middle part of the valve, making the shape of the valve more similar to a spherical shape, and the structure of the valve is more compact, lighter and stronger. Single-layer direct welding can also achieve high-precision valve manufacturing, so that the valve seat and the ball can be fully and fully sealed. The valve body design that is fully welded without bolting completely eliminates external leakage. At the same time, this type of ball valve adopts a fireproof structure design and does not require any maintenance.

The track ball valve is a multi-turn ball valve that uses the principle of tilting and rotating to eliminate scratches on the sealing surface. When the valve is closed, the ball core is pressed onto the sealing valve seat by mechanical force, ensuring a tight seal without the help of pressure difference; when the valve is opened, the ball core tilts away from the valve seat, and the fluid in the pipeline passes through the valve evenly along the surface of the ball core 360°, which can eliminate the local erosion and corrosion of the valve seat by high-speed fluid. Since there is no friction when the valve is opened and closed, it is easy and reliable to operate.