Drain valves are widely used in industrial, construction, and civil applications. The following is a detailed introduction to drain valves:
Definition and Function: Drain valves are primarily used to control the discharge of fluids, especially sewage and other pollutants. They control the relative position between the valve core and valve seat to open, close, and regulate flow, thus meeting the requirements for fluid discharge control. Drain valves ensure smooth system operation, prevent pipe blockage, protect equipment, and extend equipment life.
Working Principle: The working principle of a drain valve is based on opening and closing. When sewage or other fluids need to be discharged, operating the valve (such as a handwheel, handle, or electric actuator) separates the valve core from the valve seat, allowing the fluid to flow out. After discharge, operating the valve again causes the valve core to tightly seal against the valve seat, preventing further fluid flow. Drain valves have excellent sealing performance, ensuring no leakage when closed.
