Difference between Hydrant Valves & Landing Valves:
Landing valves are permanently charged with water using a pressurized supply. In simple words, they are globe valves, installed on hydrants. Also, a hose and a branch are connected to a coupling on it. Landing valves are installed in all the floors of a building where installation of hydrant valve is not possible and is then used by fire fighting department to extinguish the fire. The normal pressure of a landing valve is around 65 psi. In order to keep the nominal working pressure at the inlet of the hose reel, a pressure reducing valve is used in hose reel system.