Signal Wafer Butterfly Valve

The signal wafer butterfly valve is a specialized monitoring-type fluid control valve integrating shut-off function and electric signal feedback function. Developed based on the standard wafer butterfly valve structure, it is fitted with a built-in signal switch device that can accurately transmit the valve’s open and closed status to the central control system in real time. Primarily designed for fire protection systems and intelligent pipeline engineering, this valve solves the pain point of invisible valve status in traditional manual valves, realizing remote monitoring, system linkage and safe pipeline management.

Adopting a classic lightweight wafer clamping structure, the valve body features an ultra-thin and compact design. It is installed by clamping between two pipe flanges with through bolts, requiring no welding, flanges or complicated auxiliary parts. This installation method saves significant pipeline space, reduces overall equipment weight and lowers construction and maintenance costs. Its slim body structure is highly adaptable to narrow installation environments such as building pipe shafts, ceiling hidden pipelines and compact fire water pipe networks, making it the standard matching valve for modern fire protection engineering.

The core advantage of this valve is its precise signal feedback function. Equipped with a high-sensitivity mechanical electric signal switch, the device synchronously senses the 0° fully closed and 90° fully open state of the butterfly disc during operation. It can instantly output switching signals to the fire alarm controller or industrial PLC control system. On-site staff can remotely monitor the valve working status in real time, effectively avoiding hidden dangers such as accidental valve closure, misoperation or abnormal shutdown of fire pipelines, which ensures the intact availability of fire water supply systems all year round.

In terms of sealing performance, the valve adopts a mature elastic soft-sealing system. High-quality EPDM rubber seat is adopted as standard, featuring excellent elasticity, aging resistance and low-temperature resistance. The precision-machined ductile iron butterfly disc closely fits the elastic valve seat, achieving bubble-tight zero leakage under PN10 and PN16 rated working pressure. The streamlined disc design minimizes fluid resistance and pressure loss, ensuring unobstructed water flow and stable water supply pressure during fire emergencies and daily pipeline operation.

The valve adopts high-strength ductile iron as the main body material, with electrostatic epoxy anti-corrosion coating on the surface to prevent rust, scale and corrosion in long-term wet standby environments. The valve stem is made of high-precision stainless steel, with stable structure, wear resistance and oxidation resistance, adapting to long-term frequent switching and static standby working conditions. All products pass strict shell pressure and sealing tests, fully complying with fire protection industry specifications and ISO, CE certification standards. The complete specification range from DN40 to DN1200 meets the pipeline matching requirements of various civil buildings and industrial projects.

With dual functions of pipeline cut-off and status monitoring, the signal wafer butterfly valve is the designated core valve for fire sprinkler systems, fire hydrant pipe networks and building fire water supply pipelines. It can also be used in intelligent municipal water supply and drainage and automated industrial pipeline systems. It provides reliable safety monitoring guarantees for pipeline operation, effectively improving the intelligence level and safety redundancy of fire protection and fluid control systems.