Watts Premier Extremely Quiet Instant Hot Water Recirculating Pump System with Built-In Timer for Tank Water Heaters, 6.2 Inches x 6.0 Inches x 5.0 In

The recirculating pump uses a heavy-duty stainless steel pump head with aluminum pump housing, PES impeller, features high resistance to stain and corrosion, operates on 120 volts, weighs 8.5 pounds, and measures 6.2 x 6.0 x 5.0 inches System includes pump, 24hr programable timer, sensor valve with thermal actuator, 10ft power cord, adapters with rubber washers, valve mounting screws, and two 12-inch supply lines; easy installation to existing plumbing and maintenance free Extremely quiet and energy efficient this system supplies instant hot water in about 15 seconds at every faucet or shower when needed and helps eliminate wasted water using thermal by-pass technology with no return line or under-sink outlet required A sensor valve opens when the water on the hot water side cools, pushes the cool water back to the water heater, and closes when hot water line hits 98º F; if multiple hot water loops present a Watts Premier Sensor Valve Kit needed (sold separately) Pump mounts directly onto water heater, can be used with all types of pipe, and is only for indoor use on standard tank water heaters for residential buildings; cannot be used with tankless water heater or outdoors