1. Advantages of cast iron valves The flow resistance is small. The inner medium passage of the valve body is straight through, the medium flows in a straight line, and the flow resistance is small. 2. It is more labor-saving when opening and closing. Compared with the shut-off valve, the direction of movement of the shutter is perpendicular to the direction of flow of the medium, whether it is open or closed. 3, high height, long opening and closing time. The opening and closing stroke of the shutter is large, and the drop is performed by the screw. 4. The water hammer phenomenon is not easy to produce. The reason is that the shutdown time is long.
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