Profile: Hydro-Guard® offers automatic flushing devices. Our HG-1 standard unit features an atmospheric discharge with an air-gap to prevent backflow. Once programmed, the unit's 9-volt battery-powered controller slowly opens & closes a solenoid-operated valve at the preset days, times and for the correct duration programmed. The unit is constructed of non-corrosive weather-resistant materials, weighing approximately 70 pounds. It contains three main components. The control module houses the continuous loop, 10-event, battery-operated programmer, 9-volt battery, and built-in sample port. The mechanical module houses the discharge riser, flow/energy dissipation chamber, flow discharge chute and internal fastening devices. The buried base module houses a 2-inch nylon glass reinforced solenoid-operated valve, sample connection and external splash plate. Our HG-2 direct discharge unit allows the user to connect a discharge line for the flushed water. This line leads to a sanitary sewer, storm sewer, retention area/other disposal site. It is constructed with non-corrosive materials weighing approximately 100 pounds.