Three-piece ball valve connection with flange connection, threaded connection, welding, clamp connection, ferrule connection and other forms of material WCB cast steel, 304 stainless steel, 316 stainless steel and so on. Three-piece ball valve due to easy to split, in the welded ball valves are commonly used, in the left and right sub-body welding is completed can be convenient to replace the valve seat seal, in the switch more frequently, wear and tear faster conditions can be prioritized to use three-piece ball valve.
Three-piece ball valve can be in accordance with ISO5211 standards, using high platform ball valve structure. With pneumatic actuator or electric actuator to form a pneumatic three-piece ball valve or electric three-piece ball valve. Installation and maintenance is more convenient.
Three-piece ball valve ball flow channel size than one-piece ball valve ball flow channel size is larger, strong flow capacity.
Advantages of three-piece ball valve.
1, the fluid resistance is small, its resistance coefficient is equal to the same length of the pipe section.
2, simple structure, small size, light weight.
3, tight and reliable, the current sealing surface of the ball valve materials are widely used in plastic, good sealing, in the vacuum system has also been widely used.
4, easy to operate, open and close quickly, from fully open to fully closed as long as the rotation of 90 °, easy to control from a distance.
5,Easy maintenance, ball valve structure is simple, the sealing ring is generally movable, disassembly and replacement are relatively convenient.
6, in the fully open or fully closed, the ball and the sealing surface of the valve seat and the media isolation, the media through, will not cause the valve sealing surface erosion.
7, a wide range of applications, the diameter from small to a few millimeters, large to several meters, from high vacuum to high pressure can be applied.
Three-piece ball valve installation:
1, remove the protective cover on both sides of the flange end, and rinse and clean the valve in a fully open state.
2, the installation should be in accordance with the prescribed signal (electric or gas) for the whole machine test (to prevent vibration due to transportation to affect the use of performance), qualified before installation on the line (wiring according to the electric actuator wiring diagram)
3,Before preparing to connect with the pipeline, flush and remove the residual impurities in the pipeline (these substances may damage the valve seat and ball).
4,During the installation, please do not use the actuator part of the valve as a lifting point to avoid damage to the actuator and accessories.
5,This type of valve should be installed in the horizontal or vertical direction of the pipeline.
6,The pipeline near the installation point must not have low hanging or bear external force, and pipeline bracket or support can be used to eliminate the deviation of pipeline.
7,After connecting with pipeline, please cross-lock the flange connecting bolts with specified torque.