The Gamma 4 cleaning head can be adjusted to give you 4 different flow rates. Adjusting the orifice size and does not require a tool.
The Gamma 4 Cleaning head has been improved with new locking tabs to increase the strength and allow for easy installation. If your pool surface color is changed in the future you can easily change the color ring that is attached to the collar with different color. This technology can also be retrofit on existing Gamma 3 systems.
A&A Manufacturing Part No.: 565626