Watts 3/4" 009M3 Backflow Preventer Reduced Pressure Zone Assembly RPZ 3/4 009-QT 0063030 63030 Ball valve test cocks. Does not conform to Lead Free act. For non-potable use only (irrigation, fire sprinklers, etc). No special tools required for servicing. Quarter-turn, full port, resilient seated, bronze ball valve shut-offs and renewable seats. Single access cover and modular check construction for ease of maintenance.