Purchase a backflow device with Union Ball Valve ends for easy installation and un-installation to prepare for the winter.
The Febco 850 In-Line Design Double Check Valve Assemblies are designed to prevent the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. They feature a cast copper silicon alloy body and threaded ball valve end connections. Maximum Working Pressure: 175psi (12.1 bar).
Features / Benefits
Typical Installation: FE850-075 3/4 inch DCA w/Union Ball Outdoor Installation :
Pressure - Temperature
Approvals - Standards