Watts 1-1/2" 009M2 Backflow Preventer Reduced Pressure Zone Assembly RPZ 1 1/2 009M2-QT 0062921 62921 Single access cover and modular check construction for ease of maintenance. No special tools required for servicing. Ball valve test cocks. Quarter-turn, full port, resilient seated, bronze ball valve shut-offs and renewable seats. Does not conform to Lead Free act. For non-potable use only (irrigation, fire sprinklers, etc).