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Design Requirements For Track Type Ball Valve

Datong Reciprocity Group Co.,Ltd | Updated: Oct 30, 2017

Mechanical Wedge force: The bottom of the valve stem cam bevel, can provide a mechanical wedge force to ensure that the valve core and the seat of the continuous clamping force. Top-mounted design: After the system is unloaded, it can be inspected and repaired online to make maintenance simple. Internal leakage detection: The valve body is designed with a special device, can be on-line detection valve inside leakage. Low torque operation: Because of the track ball valve sealing surface without friction, small rotational torque, in addition to the large size of the gear to the outside, can be equipped with small gears.Ball Valve

Best Flow characteristics: Full path and standard path have a high CV value, reduce the pipeline drag loss, so that the wear problem to a minimum. Self-cleaning: When the valve core deviated from the seat, the media can flow along the sealing surface 360 degrees, the impurities in the media will be washed clean.Ball Valve 

Can inject the seal grease: in the operation can carry on the maintenance, will seal the grease through the grease injector inject, completely controls the valve, prevents the leakage. Long life: Track ball valve can replace those sealed by the fault of the common ball valve, gate valve, globe valves, plug valve. The unique characteristics of the track ball valve can effectively reduce the failure rate of the device and greatly reduce the user's use and maintenance cost.Ball Valve

The floating type ball valve is sealed by adjusting the sealing gasket between the valve body and the connecting body and controlling the preload pressure between the sphere and the seat, the fixed ball valve is sealed by the preload force and the piston effect of the valve seat embedded in the support ring by the spring. The common ground of the two is that the sphere is always in contact with the valve seat in the process of opening and closing, causing the opening and closing torque to be too big, the seal pair wear is serious, the service life is short, easy to leak, seriously restricts its use scope. The track type ball valve overcomes the shortcoming of the ball valve, and synthesizes the advantages of the gate valve, the globe valves, the plug valve and the ball valve, and improves the performance.Ball Valve

The Screw Groove straight Stroke section of the guide screw and the valve stem restricts the stem only for the ascending movement, and the lower slope of the stem is matched with the pin shaft, so that the sphere is shifted to the left by an angle β and the seal pair is detached. The stem continues to rise, and the guide screw is matched with the screw groove of the stem to make the stem 9o° rotation. At this point the lower part of the stem and the pin shaft, the ball for 9o° rotation, the valve opened. Conversely, rotate clockwise to the wheel, the stem drops. At this point the guide screw with the stem of the screw groove, so that the valve stem for 9o° rotation, the lower part of the stem and pin shaft with the tie, drive the sphere for 90.Ball Valve

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