Mains Water Switchover Devices Mains Water Switchover Devices are used when you may run out of water in your rainwater tank and need to switch back to mains water. Several options are available. For more information, contact one of our friendly staff members. Print Friendly Page BIA-MK6300 kPa $715.00 BIA-MK4ERAINSAVER $521.00 AS-3-4(3/4 Inch) $264.00 AS-1(1 Inch) $435.00 RA 20 $215.00
