The main characteristics of the gate valve are small fluid resistance. The medium through hole inside the gate body is straight through, and the flow direction of the medium does not change when it flows through, so the flow resistance is small. Opening and closing is labor-saving. When opening and closing, the movement direction of the valve plate is perpendicular to the flow direction of the medium. Compared with , the opening and closing is more labor-saving. The direction of media movement is generally not constrained.
The medium can flow in any direction from both sides, and both can achieve the purpose of connecting or cutting off. It is easy to install and is used in pipelines where the flow direction of the medium may change. The construction and installation points of the plug-in valve The installation position, height, and direction of the inlet and outlet must meet the planning requirements, and the connection should be firm and tightly installed on various manual valves on the insulation pipeline, and the handles must not be downward.
Before the valve is installed, it is necessary to carry out visual inspection, and the strength and tight performance test should be carried out before installation. The manual gate valve has the following advantages: the fluid resistance is small, and its resistance coefficient is equal to that of the pipe section of the same length. is also widely used.
It is easy to operate and open and close quickly. It only needs to rotate 90° from fully open to fully closed, which is convenient for long-distance control. The maintenance is convenient, the structure of the ball valve is simple, the sealing ring is generally movable, and it is convenient to disassemble and replace. When fully open or fully closed, the sealing surface of the ball and the valve seat is isolated from the medium, and the passage of the medium will not cause erosion of the valve sealing surface.