YDA Butterfly Valve with Signal Head

Medium-line butterfly valve is a kind of middle-line butterfly valve developed by our factory by introducing advanced technology from abroad. It has the advantages of simple structure, reliable sealing, easy opening, long service life and convenient maintenance. Therefore, it is widely used in various pipelines of water supply and drainage system, building fire protection system, especially in fire protection pipelines. The signal valve can clearly display the status of the valve switch, and it can directly, clearly and reliably reflect the working state of the fire control system. Therefore, it is widely and widely used in fire control system.