APPLICATION • The MHR20 Series is a fully Automatic Hydraulic Rain / Mains water changeover device designed for pressure pump supply systems in harvesting rainwater for the toilet, laundry and household applications with automatic mains backup. • The MHR20 Valve is designed to operate with an electronic pressure controller with auto restart not requiring a float switch. This design makes the MHR20 System very simple to install. • The MHR20 Valve comes with 3/4” outlet, which makes the system ideal for domestic applications. Certified to: WaterMark ATS 5200.477 WMK 60075 Complies with AS/NZS 3500.1 when installed by a licensed plumber. Note: Should the static mains supply be greater than 400 kPa above the supply pressure of the pump the device will not completely isolate mains water. VALVE SPECIFICATIONS • Max mains pressure 500 KPa • Max pump pressure 600 KPa • Flow rate >50 LPM • Max Water Temperature 40C • Rainwater Inlet 25mm 1” BSP F • Mains Water in 20mm 3/4” BSP F • Outlets 20mm 3/4” BSP F CONSTRUCTION • Pump body: AISI 304 Stainless steel • Impeller: Stainless steel • Motor Shaft: Stainless steel • Mech seal: Ceramic / Graphite / NBR
