Sprinkler heads can be set to water quarter-, half-, or full-circle areas.
Some heads can even water square or rectangular-shaped areas. Pop-up sprinkler
heads are the most popular types of heads for home lawns, although others
to look for
Pop-up heads should have a height of at least 4 inches so that they would
reach above high mowed turf. Pop-up sprayers should output water at 25
- 30 psi (pounds per square inch). Poor coverage can result if some heads
have a high-pressure output while others have low pressure. Pop-up sprayers
with a pressure reducing device installed into the unit are available.
Try to use "matched precipitation rate" heads where quarter-,
half-, and full-heads all put out the same amount of water per unit area
leading to more uniform coverage.