The 3/4" FHT flush valve is used for automatic flushing of an individual drip line at the beginning and at the end of each irrigation cycle. When reaching 36 GPH at the start up, the flush valve closes, and when pressure drops below 1 PSI the valve opens. To install the flush valve to a drip system connect the 3/4" FHT flush valve to a 3/4" male hose thread compression fitting (models LF081, LF082 and LF083) or to spin lock fittings (models LF053, LF056, LF075 and LF105) automatic end of line flush valves.
To minimize the risk of drip irrigation or micro sprinkler clogging due to low water quality, it is important to flush your irrigation system from time to time. If your irrigation system needs to be flushed more frequently, use one of the best-kept secrets of drip irrigation system, the automatic flush valve. Automatic flush valves can play a significant role in conserving time and labor and can protect your drip irrigation system.
If the flush valve does not close (continues to flush), disassemble the flush valve. Inspect the spring and washer, cleaning or replacing as necessary, and reassemble.