Automatic fire hydrant water supplying system

An automatic fire hydrant water supplying system for automatically providing hydrant supply water from a discharge port of a hydrant to a pumper fire truck,

• the pumper fire truck comprising:
• a fire-truck water pump;
• a master intake valve having a master-intake-valve input port and a master-intake-valve discharge port, the master-intake-valve discharge port in fluid communication with the fire-truck water pump;
• a water-supply fire hose having a water-supply fire-hose input end and a water-supply fire-hose discharge end, the water-supply fire-hose discharge end in fluid communication with the master-intake-valve input port;
• a fire-truck water-pump control system operatively coupled to the master intake valve;
• and
• a pressure sensor in fluid communication with the water-supply fire hose upstream of the master-intake-valve input port and operatively coupled to the fire-truck water-pump control system,
• the automatic fire hydrant water supplying system comprising:
• a hydrant valve assembly having a remotely-controllable hydrant discharge valve having a hydrant-discharge-valve input port connectable to the discharge port of the hydrant and a hydrant-discharge-valve discharge port connectable to the water-supply fire-hose input end, the remotely-controllable hydrant discharge valve operatively coupled to and controlled by the fire-truck water-pump control system;
• and
• a remotely-controllable air bleed valve having an air-bleed-valve input port and an air-bleed-valve discharge port, the air-bleed-valve input port in fluid communication with the master-intake-valve input port and the fire-hose discharge port, the remotely-controllable air bleed valve operatively coupled to and controlled by the fire-truck water-pump control system,
• wherein the fire-truck water-pump control system determines whether a pressurized volume in the fire hose upstream of the master-intake-valve input port is air or water based on a difference in density between air and water as sensed by the pressure sensor and if the pressurized volume is air causes the air to be vented to atmosphere through the air-bleed-valve discharge port before opening the master-intake-valve input port.