I redid a new sprinkler line around the house this summer, and tested it
initially when it was completed for leaks and adjusted all the heads and
directions etc...since it rains a lot during the summer in Miami, I did not
use the system for a few months until yesterday.

When I turned it on yesterday, some of the heads did not pop up, or when
they do pop up the flow coming out of them are very low. Instead of
spraying, it was more like a squirting.

I used three types of heads in the two lines I have, in the larger areas of
the lawn I used Rainbird 12SA Mini Rotor Sprinklers; around shrubs and odd
shaped areas I used Toro 570 2" pop-up body fitted with variety of spray
heads, and in the other areas I used the Orbit Hard Top spray heads. The
ones that are having trouble are all Orbit Hard Top ones.

I bought that one because the top of metal and can stand abuse from lawn
mowers and weed eaters, and it has adjustable sweeps at a very reasonable
price.

In some cases, it was the lawn growing with denser grasses covering the
heads over the last few months, as well as lawn mower cutting the grass and
lots of grass clipping end up jamming the heads a bit. If I move the grass
out of the way and jiggle the heads a bit, they will pop out but the flow is
still very low, when I tested them after initial installation they were
spraying fine.

I am wondering if it is because this is a subpar sprinkler head with poor
design? Other heads I have the Rainbird rotors and the Toto spray heads or
shrub heads do not exhibit any problems.

Thanks,

MC