The FortrezZ Brass Valve is required for use with the the FortrezZ Z-Wave Indoor Automated Water Valve Actuator (sold separately). All FortrezZ brass valves comply with published NSF61 standards, which keep lead and other metal contaminants at safe levels for drinking water systems. NOTE: This valve will not work without the FortrezZ Z-Wave Indoor Automated Water Valve Actuator. Flow rates: • 3/4" Valve: 34 GPM at 1 PSI pressure drop • 1” Valve: 52 GPM at 1 PSI pressure drop • 1-1/4” Valve: 77 GPM at 1 PSI pressure drop