mp rotator radius issues
Hello everybody,
I recently replaced one zone of 4in spray sprinklers for 6in mp rotators 1000. I needed a 13 in radius coverage which was fine for the sprays.
Now I have some mp rotator heads that reach the 13 ft while some dont. I tried adjusting the radius but I was unable to notice any difference when I rotated the little screw at the head. My house is on a slope and I think that the ones on the top do not reach as far as the ones that are lower.
I have a few questions to see if anyone can help me.
I still have 4 old spray heads/bodies in the zone, could that affect my pressure? I am using mp40 bodies for the new ones. I will change the 4 heads/bodies next week, I just have not had the time.
Also in order to lower the head for the 6in bodies, I used an extra 90 degree elbow in many of them so it comes from the main pipe from a T, and goes into an (added) 90 degre elbow into flex pipe that does an U turn to end up in another elbow that the sprinkler head screws into. Can that installation affect the pressure or something? should I just go straight from the t into the flex pipe and only the one elbow to screw into the sprinkler?
Thank you for your help.
Jorge