Watts LF007 Series 3/4" Lead-Free Copper Silicon Alloy Double Check Valve Backflow Preventer Assembly, Quarter Turn Shutoff, Single Top Entry, NPT Connections, Freeze Sensor, Modular Design
Febco 765 Series 1" Bronze Pressure Vacuum Breaker Backflow Preventer, Quarter Turn Shutoff, Union Connections, Freeze Sensor with SentryPlus Alert Technology, Industrial Plants, Irrigation System
VIWITECH Hydraulic Counterbalance Valve Comparable Replacement to Sun Hydraulics CBCA-LHN, 3:1 pilot ratio, standard capacity