Having said that, how do you raise a hunter PGP sprinkler head?
Long story short, how do you adjust the radius on a sprinkler head?
To adjust the throw radius simply insert a fine-tip flat-head screwdriver into the metal screw (located at the center of the head). Rotate clockwise to decrease the radius, and counter-clockwise to increase the radius. 1. To adjust the arc simply twist the center collar (adjustable from 0 to 360 degrees).
The red nozzles have both higher and lower flow rates than what's offered in the blue nozzles, but they deliver water very efficiently. The blue nozzles were developed as a result of our customers telling us that they didn't like the “look” of the spray pattern on the red nozzles.
Fortunately, adjusting a spray head is pretty simple, in most cases. At the top of most spray nozzles is a small screw that is used to adjust the head itself. Using a small screw driver, you'll need to either tighten or loosen this adjustment screw to achieve your desired results.
Insert the plastic key end of the Hunter wrench into the FloStop adjustment socket (Fig. 3 & 10). turn wrench clockwise to decrease or shut off the flow. Turn the wrench counterclockwise to increase the flow.
If the riser stems pull up relatively easy then it may be a pressure issue and the system's hydraulics would need to be assessed. If the head struggles to pop up even with manual assistance than the riser seal and stem itself may need to be replaced.
By referring to the Hunter PGP performance chart you will note the following: As the nozzle size goes up the flow rate goes up. I.e. the flow rate on a Number 1 nozzle is. AT 206 KPA is 1.8 Litres per Minute (LPM), while a number 6 nozzle at the same pressure (206 KPA) has a flow rate of 7.4 LPM.
Hunter products are slightly more durable than Rainbird. They can handle a greater PSI which is important when it comes to water pressure, winterization and extreme weather. Sprinkler heads sit in the ground which experience extreme temperatures. ... Hunter Controllers are way easier to program than Rainbird.