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 40°C
Rainwater Inlet 25mm 1” BSP F
Mains Water in 20mm 3/4” BSP F
Outlets 20mm 3/4” BSP F

Pump Construction
Pump Body: AISI 304 Stainless Steel
Impeller: Stainless Steel
Motor Shaft: Stainless Steel
Mech seal: Ceramic /Graphite / NBR

Applications: Single Story
Outlets 3
Max Flow 55 L/min
Warranty 3 years