an irrigation system and sprinkler blowout is a necessary service to perform before we experience a hard freeze in the fall. first, you will want to locate the water line to the irrigation pressure vacuum breaker, which is also referred to as a pvb (see fig. once you locate the water line to the pvb in your crawlspace or basement mechanical room (see fig. turn the shut-off valve to the off position (see fig. the shut-off valve should contain a small drain with a ¼” brass cap. the remaining water in the line to the pvb will drain out into the bucket. you can tape the small brass drain cap to the top of your sprinkler timer so it will be waiting there for you in the spring. if you are unable to complete these steps, either because your shut-off valve does not have a drain or because there is no shut-off valve to the pvb, we recommend that you call our office to schedule a licensed service technician to come out and install the correct valve for your sprinkler blowout. there should be a small brass drain valve on the pvb as well (see fig.
unscrew the small ¼” brass drain cap to drain any remaining water upstream of the pvb and replace it once all the water has drained. to blow out the water in the irrigation system, close both of the ball valves located on the pvb and attach your air compressor hose to the blowout tee (see fig. if you find that your system does not have a blowout tee next to the pvb, we do not recommend blowing out through the fittings on the pvb itself. this can cause damage to the parts inside the pvb and end up costing you more than getting the correct blowout tee installed in the first place. some drip systems have drain plugs installed at the end of the lines and do not require a blowout at all. for a sprinkler system, open the system valves, which are underground inside the valve box, one by one and use approximately 80 psi to blow out each zone separately. turn both of the pvb shut off valves to a 45 degree angle. finally, turn off your sprinkler timer and remove the battery if applicable. we wish you the best of luck with your irrigation system and sprinkler blowout, don’t hesitate to call us for more information or assistance. we appreciate the work you did and your professionalism.
adapter to winterize underground irrigation sprinkler systems. includes printed instructions. includes most common pipe thread combinations! avoid multiple when you’re completely finished blowing out all of your zones, turn all of the valves on your backflow preventer to 45 degrees. do this on the blow-out method procedure shut down the water supply and connect the air compressor to the irrigation system using the coupler. find the sprinkler station, sprinkler blowout adapter, sprinkler blowout adapter, sprinkler blowout adapter lowes, winterize sprinkler system without air compressor, sprinkler blowout adapter ace hardware.
make sure the valves are open on the zone you are blowing out. a closed line with pressurized air running through it can burst the pipe. turn on the compressor if your sprinkler system uses manual drain valves, locate the valve at the lowest point on your system’s mainline. wear protective goggles for once you’re done blowing out sprinkler-by-sprinkler or zone-by-zone, close the shut-off valve on the compressor. then alternately open and close the backflow, sprinkler blowout near me, scfm for sprinkler blowout, rain bird sprinkler blowout adapter, how to winterize a sprinkler system with backflow preventer.
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