The P-451 NL Legend press swing check valve is ANSI/NSF 61-G compliant, third-party-certified by the Water Quality Association. The swing check valve has press fittings integrated into the cast-brass body of the valve, assuring the integrity of any pressed joining to copper tube. This eliminates the need to use either sweat or male press adapters in a standard sweat or threaded-swing check valve, saving time and the material costs of additional parts. No-lead forged brass is used for the disc, hinge pin and retaining screw. The DZR no-lead brass P-451 is available in sizes 1/2” through 2”. For more information, contact Legend at 800/752-2082.