Sorry, I should also add I am in Michigan if that makes any difference. Thanks!
****o - I have really begun investigating irrigation systems the last few weeks. The grass at our new home is no taking (rocky soil), so we are planning to till, sift and add topsoil. This seems like an ideal time to install a sprinkler system too. I know that my Township requires that I have a pressure vaccuum Breaker for backflow. they suggested tge Watts 800 or Febco 765 models. However, every schematic I have seen for these and other models show the main pipe (pardon my oversimplification -...
