1) It is less labor-saving when opening and closing, which is compared with the stop valve, because whether it is opening or closing, the direction of movement of the gate is perpendicular to the direction of medium flow;
2) The flow resistance is small, the medium channel inside the valve body is straight, the medium flows in a straight line, and the flow resistance is small;
3) The height is large, the opening and closing time is long, the opening and closing stroke of the gate is large, and the lowering is carried out by the screw;
4) The phenomenon of water hammer is not easy to produce because of the long closing time;