Febco Maintenance Documents:

Double Check Assemblies
805Y/805YB/805YS3/4 – 2 inches
805YD/806YD2 1/2 – 10 inches
850/850U1/2 – 2 inches
850/870/870V/876/876V2 1/2 – 10 inches
Pressure Vacuum Breaker Assemblies
7651/2 – 2 inches
765 Freeze Protection Information1/2 – 2 inches
Reduced Pressure Principle Assemblies
825Y/825YA/845/825/825D/826YD825 Series Maintenance
  (3/4 – 10 inches)
860/860U/880/880U1/2 – 2 inches
860/880/880V2 1/ 2 – 10 inches
825YD, 826YD, 860, 880V
Relief Valve Assembly
2 1/2 – 10 inches
Freeze Protection for 850/860/8801/2 – 2 inches

Ball Valve

Cross Connection Control