BAOYI signal butterfly valve is composed of the central-line seal butterfly valve as the basic component and the signal device, and can be used to realize the remote transmission of opening-closing signal. The product design can meet such relevant requirements as API 609 and EN 593. Generally, the product is mainly applied as the auxiliary product of the sprinkler system for fire prevention in various structural fire protection systems and the devices with the requirements for remotely displaying the valve opening-closing state.

·The keying signal device is set at the top of the valve for convenient maintenance;
·The signal device is totally closed, and the output signal is stable and reliable;
·The valve opening degree indicator is set inside the device for convenient field inspection;
·Flange sealing gasket is not needed for installation.