In fire protection piping systems, butterfly valves play a vital role in enabling rapid and reliable water supply during fire emergencies. These systems must transmit real-time information regarding valve open/close status to the central control room or fire control panel to ensure immediate response when a fire occurs.

The open and close signals of butterfly valves are typically conveyed through limit switches. These devices detect the valve's position and transmit a green signal when open and a red signal when closed. This signal is monitored in real time by the control room, enabling verification of proper water delivery during an emergency.

Jeongdo Machinery’s fire protection butterfly valves feature a patented integrated limit switch and terminal block design (Patent No. 10-19911505), which simplifies wiring and ensures reliable signal transmission. This all-in-one structure is highly effective in preventing short circuits and leakage, minimizing signal errors during critical fire events. In addition, a transparent cap on the top allows for quick visual inspection of wiring and signal status, streamlining maintenance and troubleshooting.

For Wafer type fire protection butterfly valves, Jeongdo Machinery utilizes aluminum alloy construction, which offers excellent corrosion and heat resistance while remaining Light-weight. The addition of a hard backing structure combined with a resilient seat significantly enhances product durability and service life—even under high-temperature, high-humidity conditions.

Our fire protection butterfly valves are KFI-certified (Korea Fire Institute) and also API 607 fire-safe certified, ensuring compliance with performance and safety standards.
Note: Fire protection valves are classified as “optional certified products” under Korean performance certification regulations.

Note: Fire protection valves are classified as “optional certified products” under Korean performance certification regulations.