Reduced Pressure Zone Valve

Learn about Reduced Pressure Zone Valves in this excerpt from the Fire Hydrants and Valves lecture in our Exam Prep course.
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[@Queensburian]

Thank you for the clear diagrams and simple explanation of an RPZ back flow preventer. Well done!

[@conqwiztadore2213]

wow thank you for the demo! understand it much better now

[@davidleblanc2239]

Great explanations. Thank you.

[@Joel.M73]

I understand you should use a y-strainer for double check backflow preventers. Do you need a y-strainer for reduced pressure backflow preventers?