Valve: A valve is an outlet element that opens and closes depending on the conditions in fluid-containing installations. It is generally a safety device that, in systems where fluid pressure is critical, reduces pressure by releasing fluid from the system when pressure rises, or interrupts fluid communication in an emergency.

Hydrant: Hydrants provide firefighters with a water source so that they can intervene quickly and on-site in the event of a possible fire.

Air Valves: These are valves that operate according to hydromechanical principles and are used to allow air inlet and outlet during the filling, emptying and operation of pipelines.

Check valve: These are safety valves produced to prevent the fluid passing through them from returning back.