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Irrigation/Richdel 446PR


QUESTION: Dear Robert:  We have a Richdel 446PR system.  all works fine but one zone.  The water dribbles out of those heads and the heads do not pop up.  any ideas?  Thank you, Kevin

ANSWER: When does the water "dribble" out of the heads?

Only when the zone runs  or 24/7

Did the zone run normal prior to this issue?

Have you already looked for a leak in the zone?

Have you already checked for restrictions in the valve or elsewhere along that zone?

I will be taking the rest of the week off of work and will reply when I return on Monday if I do not hear back from you by 2pm EST today.


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QUESTION: The water dribbles out only when the zone runs.  The zone ran fine prior to this.  How do you check for a leak in the zone?  thank you, Kevin

I would check the valve to make sure there is no obstructions. When trying to find a leak on a zone one can cap all of the heads and run the zone until a leak is found. So to recap dribbling heads can be a result of an obstruction blocking the water flow or from a leak. We have also seen pipes that have been kinked over the years from aggressive roots from both plants and trees.  


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Robert Diersing


I am able to answer any questions related to lawn irrigation systems and backflow devices. But pumps are not my speciality since they are not common in my area. Most of my product experience is in Hunter, Rainbird and Irritrol components.


I have been in the Irrigation Industry since 1998 with experience in everything from residential to athletic fields, commercial, industrial to complete Hospital campuses

Irrigation Association

I have been quoted in trade magazine articles.

Kent State University 12 CEU's per a year in Industry related classes

Awards and Honors
Irrigation Association Certifications: Certified Irrigation Contractor State of Florida Licensed Irrigation Contractor State of Florida Certified Backflow Tester State of Ohio Certified Backflow Tester EPA WaterSense Partner

Past/Present Clients
Hospitals, School Districts, National Franchises, Government Agencies

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