Cross-connections exist in nearly every plumbing system. Identifying and evaluating each cross-connection is essential to determine the type of backflow protection required to safeguard the drinking water supply.
Some plumbing fixtures include built-in protection in the form of a physical air gap, which prevents contaminated water from flowing back into the system. However, many cross-connections require additional protection through the installation of an approved mechanical backflow prevention device or assembly.
Common cross-connections found in plumbing and water systems include:
• Wash basins and service sinks
• Hose bibs and exterior faucets
• Irrigation and sprinkler systems
• Auxiliary water supplies
• Swimming pools and hot tubs
• Photo developing equipment
• Solar heating systems
• Boilers
• Fire sprinkler systems
• Water recirculating systems
¿Qué es la conexión cruzada?
Las conexiones cruzadas existen siempre que el sistema de agua potable está o podría estar conectado a cualquier fuente no potable (artefactos o equipos de plomería utilizados en cualquier sistema de plomería). Los contaminantes o los contaminantes pueden ingresar al sistema de agua potable a través de una conexión cruzada incontrolada cuando se produce un reflujo.
Where are Cross-Connections Found?
Backflow Preventer Assembly Example
Example of how a backflow preventer works
Both types of backflow preventors are used to prevent backflow of contaminated water into the potable water system:
Reduced-Pressure Backflow Assembly (RPBA) - used for High-risk scenarios and is normally placed above ground and in a building.
