Helps maintain optimum pressure and water flow to the drip line and emitters. Filters debris to help keep emitters operating properly. Connects to a standard hose bib. Simplifies the connection to a water system. 20 GPM capacity. 3/4 in. FHT fitting. Durable, robust design provides reliable operation. To automate your system, add a Rain Bird 1ZEHTMR Hose-End Timer (Sold Seperately). Black.