Building on Rain Birds legacy of high efficiency irrigation nozzles, the HE-VAN series combines water saving performance with the convenience and versatility of variable arc nozzles. They can replace the nozzles on most major brands of spray heads. Producing larger droplets that fall quickly and resist wind-blown overspray, HE-VAN nozzles also help you keep water on the grass, not on the sidewalk, driveway or buildings. With a simple twist of the nozzle collar you can adjust the spray pattern from 0 degree to 360 degrees. All feature Rain Birds MPR (matched precipitation rate) watering distribution allowing them to be mixed with other MPR spray heads on the same zone regardless of spray adjustment.