C400 4 in. Stainless Steel Grooved Backflow Preventer - ames c400 multimeter manual
Inlet and outlet both measure 3/4 inch in diameter. Constructed with lead free materials. Features an exclusive design integrating a patented air-in and water-out principle. Prevents polluted water from entering a potable water supply due to back siphonage. Ideal for use in continuous pressure piping applications, cross-connections identified as health hazards, and service line entrances. Manufactured to comply with national plumbing codes and water authority requirements.
8615510865705 
8615510865705