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What type of backflow prevention device is the most reliable for a sprinkler system?

Anti-siphon valve
10%
Check valve
8%
Double check valve
19%
Pressure vacuum breaker
30%
Reduced pressure backflow preventer
19%
No preference
5%
Not sure
5%
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Question: What type of backflow prevention device is the most reliable for a sprinkler system?
Top Answer (30% of 56 votes): Pressure vacuum breaker.

Answer: Pressure vacuum breaker
Explanation: A pressure vacuum breaker (PVB) is a type of backflow prevention device, used to keep non-potable (or contaminated) water from entering the water supply. City codes require a pressure vacuum breaker be installed on all irrigation systems.
Mist-O-Matic, Inc
Answer: Reduced pressure backflow preventer
Explanation: This give you the most amount of protection
Turning Point Landscape Services
Answer: Pressure vacuum breaker
Explanation: Pressure vacuum breakers are the most common. However if your house is positioned at the bottom of a hill and there will be sprinkler heads located greater then the height of the point of connection, in this case a reduced pressure backflow preventer will be required
Berkshire Gardens Turf Services Inc
ProMatcher
Answer: Double check valve
Explanation: Of this list, Double Check Valves would be the most reliable as in the name - double check.
Sprinkler Guy KC
Answer: No preference
Explanation: as long a s there maintain all about the same
My Sprinkler Medic
Answer: Double check valve
Explanation: But double check valve is an essential part of any irrigation system. You must prevent any water from getting back into your drinking water.
Land Tech Landscapes
ProMatcher
Answer: Pressure vacuum breaker
Explanation: Pressure vacuum breaker are required in most cities.
Colorado Sprinkler Service LLC
Answer: Check valve
Explanation: Backflow prevention devices vary by state and municipalities local codes...each typr has a specific set of conditions they are used for.
TANZ Inc
Answer: Double check valve
Explanation: there are different city codes to determine type used
oasis well drilling & irrigation
ProMatcher
Answer: Check valve
Explanation: A check valve prevents non-potable water from entering back into your potable water supply. A double check valve will perform the same service. I don't recommend vacuum breakers.
Intelligent Irrigation
Answer: Reduced pressure backflow preventer
Explanation: Which kind of device used depends on the size and elevation changes of the system. Overall a reduced pressure backflow preventer is the least likely to fail.
Direct Home Service
Answer: Double check valve
Explanation: In Oregon
Creekscape Design LLC
ProMatcher
Answer: Not sure
Explanation: Please clarify, is the back flow for a fire sprinkler system or a lawn sprinkler system?
SimplexGrinnell
Answer: Double check valve
Explanation: The type of back flow valve to use is determined by the risk off a potential health hazard.
Superior Irrigation and Lawn
Answer: Reduced pressure backflow preventer
Explanation: All city's will have a code on what backflow is needed for install if the city does not have a code against one or another we will go with a double check system
Stricklins Landscaping
ProMatcher
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