SPECIAL ORDER ITEM. Review Returns Policy before purchase. This copper press cap is designed for large-diameter piping systems, providing a secure and permanent seal for the end of 2-1/2 in copper tubes. It features integrated technology that allows installers to easily identify unpressed connections during pressure testing, ensuring maximum system safety. Made from high-quality copper, it is fully compatible with potable water and hydronic heating systems. The press connection eliminates the need for soldering or flame, significantly reducing installation time on the job site while maintaining a leak-free seal.