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

Anti-siphon valve
10%
Check valve
9%
Double check valve
20%
Pressure vacuum breaker
30%
Reduced pressure backflow preventer
18%
No preference
5%
Not sure
5%
Next Question
Question: What type of backflow prevention device is the most reliable for a sprinkler system?
Top Answer (30% of 55 votes): Pressure vacuum breaker.

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
Answer: Pressure vacuum breaker
Explanation: Most irrigation systems utilize the AVB (atmospheric vacuum breaker). These back flow devices are economical and effective. Prior to installing any irrigation system, it is best to check your local building codes for specifications or requirements. Some systems may require alternate back flow devices.
DIAMONDBACK Service Management
ProMatcher
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
Answer: Double check valve
Explanation: Check with your local building department for there requirements.
Pro Cuts Lawn and Irrigation Service
ProMatcher
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
Answer: Reduced pressure backflow preventer
Explanation: Other than an air gap, nothing is better than the RPZ. They are costly and need to be tested annually so alot of companies will put in the double check valve instead.
BlueMark Water
ProMatcher
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
Answer: Pressure vacuum breaker
Explanation: Pressure vacuum breakers and Double Check valves both work great.
AQUAMAX SPRINKLER SYSTEMS
ProMatcher
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
Answer: Reduced pressure backflow preventer
Explanation: RP backflow preventers are although a double check backflow preventer is quite adequate
Accurate Waterfalls & Irrigation
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