Firefighting installation including a network of vacuum sprinklers which can be tripped by an actuator comprising a piston and being controlled by a master actuator

A fire fighting installation, including comprising:

• a network of vacuum sprinklers, with the installation integrating a trip device for filling the network of sprinklers with water, with the trip device comprising:
• at least one actuator comprising a body in which exits a water inlet duct and a water outlet duct able to be placed in communication, a member of the actuator being able to authorise/prevent the a putting into communication of the water inlet duct with the water outlet duct in such a way that the preventing of the putting into communication of the two ducts maintains the network of sprinklers under a vacuum while the putting into a communication of the two ducts trips the filling with water of the network of sprinklers;
• a master actuator sensitive to pressure present in the sprinkler network and capable of moving a yoke from a first to a second position;
• a lock, which locks a member of the actuator in a position that prevents the putting into communication of two ducts;
• a transmission member between said yoke and said locking means lock able to allow the member of the actuator to pass into the position that allows for the putting into communication of the two ducts when the yoke is in said second position,
• wherein the at least one actuator comprises a piston able to move in a cavity of the body, and having an external portion extending outside of said cavity and being provided with a ring whereon the lock acts.