Manual valve

Manual valve

A manual valve is a control component of a manual valve that can change the flow direction and cross-section of the medium, and has functions such as guiding, cutting off, adjusting, throttling, checking, diverting, or overflow pressure relief. For fluid control valves, the nominal diameter of the valve ranges from very small instrument valves to industrial pipeline valves with a diameter of 10m. Valves can operate according to predetermined requirements under the action of pressure, temperature, or other forms of sensing signals, or simply open or close without relying on sensing signals. Valves can change the size of the flow channel area and achieve control functions by driving or automatic mechanisms to lift, slide, swing, or rotate.