Rotary Nozzles
A fairly recent invention in the landscape irrigation industry has been the development of rotary nozzles. They have been out for a couple years, but are still relatively unknown to many people who are not in the lawn sprinkler industry.
A rotary nozzle is a nozzle that can be installed on a spray head which normally uses conventional fixed pattern and variable arc spray nozzles. The rotary nozzle distributes the water in a pattern similar to a rotor head in the way that it rotates, compared to a normal spray nozzle which does not rotate.
The main benefits of rotary nozzles is that they use less water that spray nozzles and they are great for watering areas that are anywhere from 13 - 24 feet. One particular size of rotary nozzle that Rain Bird makes is a 17' -24' radius nozzle. I personally love these nozzles as they water areas which were usually right in between the range of standard rotors and sprays.
The lower GPM rate is also good for those with a limited water source. The only down fall that I have found with rotary nozzles are that you must run the zones longer than sprays (just like regular rotors) and they seem to clog up a little quicker when used on water sources that carry a lot of debris.
I have also found rotary nozzles to be a good solution on existing systems that have been "overloaded." By "overloaded" I mean a system that has been altered by the installation of too many and/or too big of spray nozzles which use up too much water and cause low pressure.
A common mistake I see in the field is that people will try to get their heads to throw farther, but by installing a bigger nozzle and using too many gallons per minute that actually make the head throw even less due to low pressure. A great solution for this is the use of rotary nozzles! You can easily change the nozzles without even using a shovel! You can save numerous gallons per minute and get the heads to actually throw further when done right.
Besides the couple of negatives, I would highly recommend using rotary nozzles on your lawn sprinkler system design.
Scott
http://www.autolawnsprinklers.com
A rotary nozzle is a nozzle that can be installed on a spray head which normally uses conventional fixed pattern and variable arc spray nozzles. The rotary nozzle distributes the water in a pattern similar to a rotor head in the way that it rotates, compared to a normal spray nozzle which does not rotate.
The main benefits of rotary nozzles is that they use less water that spray nozzles and they are great for watering areas that are anywhere from 13 - 24 feet. One particular size of rotary nozzle that Rain Bird makes is a 17' -24' radius nozzle. I personally love these nozzles as they water areas which were usually right in between the range of standard rotors and sprays.
The lower GPM rate is also good for those with a limited water source. The only down fall that I have found with rotary nozzles are that you must run the zones longer than sprays (just like regular rotors) and they seem to clog up a little quicker when used on water sources that carry a lot of debris.
I have also found rotary nozzles to be a good solution on existing systems that have been "overloaded." By "overloaded" I mean a system that has been altered by the installation of too many and/or too big of spray nozzles which use up too much water and cause low pressure.
A common mistake I see in the field is that people will try to get their heads to throw farther, but by installing a bigger nozzle and using too many gallons per minute that actually make the head throw even less due to low pressure. A great solution for this is the use of rotary nozzles! You can easily change the nozzles without even using a shovel! You can save numerous gallons per minute and get the heads to actually throw further when done right.
Besides the couple of negatives, I would highly recommend using rotary nozzles on your lawn sprinkler system design.
Scott
http://www.autolawnsprinklers.com
posted by Irrigationman at
4:56 PM
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