A preventer can provide years of service without any problem, but if either of the two check valves inside the device becomes clogged with debris or a mineral buildup, it spits water into an open-ended vertical pipe.
How do I know if my sprinklers are self draining?
Depending on the type of drain valve your system utilizes, draining could be truly automatic, or it could be manual, requiring that you pull a few levers to get things moving. One way to tell if your system is manual-draining is if your sprinkler heads have check valves on them.
What causes a backflow preventer to dump water?
The most common causes are small leaks are debris like dirt, sand, or small rocks causing a blockage inside the valve. Open up the pipes and clean the inside of the valve with running water or a can of compressed air if you have one handy.
What is the difference between check valve and backflow preventer?
A backflow preventer is to be used in high hazard situations and is meant to fully protect the potable water with their fail safe design while a check valve is used in low hazard situations and prevents backward water flow but it does not have the same fail safe components.
How does a backflow preventer work?
Series LF909 Large reduced pressure valve assembly backflow preventer is designed to prevent the reverse flow of liquids in a plumbing system due to backpressure or backsiphonage where there is a potential health hazard.
How do I use the backflow flood sensor alert?
This backflow assembly also includes a Backflow Flood Sensor Alert that monitors the condition of your backflow assembly 24/7 and alerts you in the event of RPZ discharge. Simply connect to the SentryPlus Alert System or to your BMS and activate it.
What are the risks of backflow contamination in drinking water?
The risks to drinking water quality from backflow contamination incidents pose a constant threat—whether they’re nuisance, non-health hazards, or serious public health events. Plumbing codes mandate that potable water supplies be protected against backflow at all cross-connections.
