Hydrant Valve or Landing Valve provide the means to draw water for fire fighting from the Fire water piping network. A fire hydrant is simply a valve-like device similar in function to your water tap that provides constant water flow when you open it. Firefighters connect their water hose to that big valve that provide pressurized water flow to fight a fire. Hydrant systems typically refer to firewater systems for the purposes of municipal or industrial applications. The valves fitted on the hydrant stand posts, as part of the hydrant systems, are called hydrant valves. A fire hydrant system is comprised of water supply pipework and valves, which can be connected to the hose of fire brigades for firefighting purposes.