HG-3
![public://uploads/media/HG-3_Permanent_Flushing_System_clr_img_0.jpg](https://www.muellercompany.com/sites/muellercompany.com/files/styles/product_main_image/public/uploads/media/HG-3_Permanent_Flushing_System_clr_img_0.jpg?itok=sEdc8K9J)
HG-3
Permanent Automatic Flushing System
Developed for use in moderate to severe cold weather climates, the HG-3 unit can be operated all year in all weather conditions. All of the unit’s mechanical components are located below frost depth, yet are easily assessed using the patented Hydro-Guard® Cam-Lock™ Release System. In addition, the battery and programming interface are accessible from the top of the device.