The Rainbird 80EHD is a full circle only brass 1 1/4 inch ag impact head with dual front nozzle ports. This head is not adjustable for part circle.
Select Range Nozzle and a Spreader Nozzle or Plug from Pull Down Menu. The correct Spreader Nozzle for the 80E Ag Impact Head is the LAN-1-20 - #10026 - Low Angle Spreader Nozzle and is mounted in the lower front Nozzle Port. The three-quarter inch male thread SBN-5 or LPN-5 Brass Range Nozzle is mounted in the upper front nozzle port.