ASTM F1807|NSF/ANSI 14, 61

Lead-free design is suitable for all no-lead potable water installations, in full compliance of the National lead-free plumbing law. Durable, DZR forged brass construction is smaller, yet stronger than cast versions making them ideal for confined tubing installations. Maintenance-free dual O-ring, blowout-proof stem design eliminates the stem packing nut, thereby eliminating the need for periodic nut tightening. PTFE seats assure a positive shut-off and a longer in-service life over ball valves with other seat types. Self-cleaning chrome-plated ball resists mineral build-up and scaling typically found in harsh, varying water conditions.