Pop-up impact sprinklers are long-lasting and particularly well suited for performance with heavy-mineral content hard water and well water that can clog and corrode other sprinklers. Arm is double-weighted for slower rotation and increased distance of throw up to 41’. Diffuser screw breaks water into smaller droplets for uniform watering and allows up to 25% radius reduction. Heavy-duty, high impact case with sturdy reinforced ribbed design. Grit proof bearing for reliable operation and heavy-duty stainless-steel retract spring for reliable pop-up and retraction. Full circle (360°) or part circle (20° to 340°) coverage with infinite pattern adjustment. Spacing from 26' to 41' apart. Designed for wide pressure range from 25 to 50 psi. A