Rotating. 8 GPM. 1 decade ago. 4 pack hunter PGP rotor heads with 7 nozzles already installed in each head. Favorite Answer. Hunter PGP-adj Rotor Sprinkler Heads - 4 Pack - Includes Adjustment Tool 4.7 out of 5 stars 627. Answer Save. Maximum Flow Rate. Water pressure lifts the nozzle mechanism of your sprinkler heads above ground level when the water is running. So we did an install and installed many of the heads with the smallest nozzles due to the well drawing down. Although Rainbird is a little bit cheaper than Hunter, when you take into consideration that Rainbird is an inferior product which may cost you more in the long run, in our opinion Hunter is the way to go. why does a hunter pgp sprinkler head rotate only one direction 360 degrees? Adjustable heads are preset to approximately 180°. To avoid multiple trips to your big box hardware store to find the right replacement part, take one of the working sprinkler heads… Mike. We have changed out 6-7 already. $49.97 ... 711TEK Garden Sprinkler Automatic Lawn Sprinkler Water Sprinkler Lawn Irrigation System 360 Degree Rotating Adjustable for Garden Lawn Yard Kids (Sprinkler with Counterweight Module) 4.3 out of 5 stars 429. UNSPSC. Show More. Its exceptional design and impressive performance placed the rotor a cut above back then, and continuous improvements and enhancements have allowed it to remain the number one selling rotor in the world ever since. Community Q & A. Female. 21101800. These rotors can be adjusted from 50 to 360 degrees. When in operation, water turns a small turbine in the base of the sprinkler, which drives a series of gears that cause the head to rotate. Relevance. Normally, the nozzle will retract into the body of the sprinkler head where it is safe from damage by the lawnmower or playing children. Installation tips have also been placed throughout the guide to assist you in planning a system. Reviews. The Hunter PGP comes in a full circle model (only rotates 360 degrees) and a part circle model (adjustable to do a quarter, half circle, etc) The system is 12 years old. This job was finished 2 weeks ago and have been back 3 times for heads not rotating. ing suggested installation methods for sprinkler heads, pipe and valve manifolds, and how to connect the sprinkler main line into the house water system. PGP Rotor. Pressure Rating (PSI) 100. The Hunter gear drive mechanism is sealed from dirt and debris. 3 Answers. Hunter PGP Sprinkler Head Parts Why settle for second best when you can have the sprinkler by which everything else is measured. When a head stops rotating, you get a green strip of grass in your yard, and the rest will be brown around it. Hunter PGP® - Sprinkler Head Arc Adjustments. Show More. Inlet Thread Type. Price. The PGP® is Hunter's original product‐the item that put the company on the map in 1981. Not all sprinkler heads or nozzles are interchangeable. 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