Product introduction: Signal gate valves and signal butterfly valves are used in automatic spraying water pipeline in fire protection system to monitor the water supply pipeline and indicate the valve’s opening at a long distance. Rising stem gate valves and opening indicator gate valves are often used in fire protection system, and if the installation position is high to the ground, rising stem gate valves is used and can show the valve’s opening clearly while if the installation position is low, opening indicator gate valves is used.

Characteristics:
Gate buried type technology, not to need to do well, reduced the scope of installation construction and embedment depth is adjustable.
Long service life, no leakage, possesses the advantages of spring brake.
Low does not affect traffic, safe and reliable, it is an organic whole repeatedly with the underground part, to prevent theft.
Stem section telescopic structure unique, effectively prevent the influence of surface subsidence of the valve.
Mocro-switch working parameters: