Made from no-lead cast bronze, this Head Stop and Drain with Check Valve ensures a steady flow of water with no leaks or blowouts. Includes a check valve that can close quickly if there is backflow or insufficient forward pressure. As a leading supplier of Plumbing products, A.Y. McDonald Mfg. Co. is ready to offer you the best in quality, service, and dependability. You can trust A.Y. McDonald for superior plumbing products and customer support. As expert manufacturers, we recognize quality fittings and valves when we see them. The quality of our products is as important to us as the quality of our customer service. You can count on talking to a real person — not a machine — and finding real solutions for your plumbing challenges.