First, the working principle
Signal butterfly valves are an important component of automatic sprinkler systems. The worm and worm drive drive the rotating shaft and the disc to realize the opening and closing and control flow. By rotating the worm gear of the worm gear, the butterfly plate is opened and closed and the flow is adjusted. The hand wheel rotates clockwise to close the valve. A micro switch is provided in the transmission case body to output a closing and opening signal of the valve to display different positions of the butterfly plate.
Second, the product introduction
The signal butterfly valve produced by our company adopts the form of worm gear transmission, and the structure is the clip type. The valve body is made of ductile iron, the disc material is chrome-plated cast iron, the sealing material is EPDM, and the shaft material is 45# steel chrome. Signal butterfly valve production standards: "GB5135.6 automatic sprinkler system part 6: general valve."
Third, product use
The fire signal butterfly valve is installed at both ends of the alarm valve group or at the inlet of each branch of the system. When the alarm valve group or network is repaired, turn it off. The signal butterfly valve is equipped with a signal device that can emit an electrical signal to indicate the on and status of the butterfly.
Fourth, product model and technical parameters
Applicable medium: water or fire foam mixture
Adapt to temperature: -20 ~ 120 ° C
Signal power supply: DC24V, 3A
Nominal action pressure: 1.6Mpa
Five, installation size and wiring method
Sixth, installation and maintenance instructions
a. There should be a certain space around the signal butterfly valve for easy installation and maintenance operations;
b. During the transportation and installation process, the signal butterfly valve should avoid violent collision as much as possible to prevent the sealing surface and the micro switch from being damaged, which will affect its sealing performance and the normal operation of the electrical signal system;
c. Do not disassemble and adjust the signal butterfly valve before and after installation;
d. After the signal butterfly valve is installed, before the pipeline is sealed and tested, the disc should be completely opened and the inner cavity of the pipeline should be rinsed clean. Otherwise, the disc may be closed tightly. The closed or open state should be locked.