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Bookmark or Share- Chemigation Approved Backflow Prevention Assemblies and Chemical ...Approved backflow prevention devices include a Reduced Backflow Prevention Assembly (RP assembly) or an Air Gap (AG) configuration. Chemigation systems must also include a functional system interlock which is designed to shut down the chemical injection system when chemical distribution is adversely affected.
- Preventing water backflow - inspection.canada.caSelecting prevention devices. There are six basic types of devices that can be used to prevent backflow: Non-mechanical. air gaps. barometric loops. Mechanical. atmospheric and pressure vacuum breakers. double check valves with intermediate atmospheric vents. double check valves.
- What Is a Backflow Preventer? (And Do You Need One?)A backflow preventer is designed to stop water from traveling in both directions. It gets installed in-line and uses one-way valves or vacuums to prevent backflow. Backflow preventers come in a few designs based on how severe backflow through a particular water line would be considered.
- American Backflow Prevention Association - ABPAThe American Backflow Prevention Association is an organization whose members have a common interest in protecting drinking water from contamination through cross-connections. ABPA is an organization dedicated to education and technical assistance.
- Backflow Preventers - Valves - The Home DepotModel# 1-375. Wilkins. 1 in. 375 Reduced Pressure Principle Backflow Preventer. Compare. (17) Model# 1-350XL. Wilkins. 1 in. 350XL Double Check Backflow Preventer Valve. Compare. (25) Model# 50H-BR. Woodford. Add-On 3/4 in. Hose Thread Brass Double-Check Backflow Preventer. Compare. (1) Model# 1-975XL. Wilkins.
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