Colt Series

Double Check Valve Assembly (DC) Backflow Preventers can be used in fire protection systems without chemical additives and to protect industrial in-plant plumbing systems, as well as any other systems which require low-hazard protection. Local codes may vary, consult authorities for specific approved applications.

Double Check Detector Assembly (DCDA) Backflow Preventers are used primarily on fireline sprinkler systems when it is necessary to monitor unauthorized use of water. They may be installed under continuous pressure service and may be subjected to backpressure.

Reduced Pressure Zone Assembly (RPZ) Backflow Preventers are normally used in high-hazard applications for protection against both backsiphonage, backpressure and the fiouling of either check valve.

Reduced Pressure Detector Assembly (RPDA) backflow preventers are installed on fire protection systems connected to the public water supply in a high-hazard application. The C500 is used to monitor unauthorized use of water from the fire protection system.