The HARCO 90 Degree Lateral Connection is designed to connect irrigation laterals to mainlines and provide a change in elevation while providing a convenient connection for your NPT isolation valve. High-strength ductile iron eliminates the aggravation and expense associated with repairing pipe and fittings that break at this high stress area in golf and commercial irrigation systems. The high corrosion resistance of this material is not found in black or galvanized steel fittings.