Track plug

Track plug works: when the valve is fully open state of the channel stopper Xing valve channel alignment, to ensure that the desired minimum pressure drop when turning the hand wheel, the plug will rotate in the direction of the valve, the valve plate while driving. rotated 90 degrees, while continuing to turn the hand wheel, the plug will be under pressure to both sides of the valve opening, the valve will be tightly pressed against the seat, the valve is closed. When the handwheel is rotated in the opposite direction, the first so that the plug upward movement of the valve seat from the sheet to continue to turn the hand wheel so that the valve plug drive rotated 90 degrees, the last passage in the valve plug alignment of the channel, the valve is fully open state. track stopcock The advantage is the valve in the open process, the valve and the valve seat is out of state, the switching process is zero friction, does not make the sealing surface wear, and sealed with a soft seal, the seal in the closed zero leakage.