ASC T2M Tank-2-Mains Changeover


SKU: ASC-T2M Categories: ,

ASC T2M Tank -2- Mains Switchover

The ASC T2M ( Tank to main ) is an Automatic Rainwater / Mains Water Changeover Device designed to provide automatic mains back up for Pressure Pump supply systems. The ASC T2M is designed to be installed in conjunction with a Pressure Pump supply system that is fitted with an independent pressure and flow controller with loss of prime protection and 24 hour auto restart.
Operation: The ASC T2M supplies clean rainwater from a rainwater tank via an automatic pressure system pump to toilets, laundry and garden taps in a household. Mains water is also connected to the ASC T2M as an automatic back up should rain water level be too low, or if there is a power or pump failure.

Control Features: 

  • Proven components
  • Requires no power supply and consumes no electrical energy
  • Designed to operate with pumps and mains up to 1000 kPa (145 psi)
  • Pump flows to 105 l/m, mains flows to 40 l/m (at 500kPa mains)
  • Designed to further save water resources by reducing incoming mains to 200 kPa
  • Requires no weather proofing
  • Can be mounted any distance from the pump underground or inside a tank
  • Completely waterproof – Can be hosed down without the fear of electrocution
  • WaterMark approved components for connection to all Town Water supplies. Safe against water borne bacteria, dezincification and lead poisoning
  • No unsightly controller power, water level float cables or the need for a dedicated controller power point
  • Australian owned and designed
  • Non Return valve, which means should you have a pump issue you can make repairs without losing water .
  • Barrel Union fitting , making it easier to connect and reconnect
  • All Brass components , which means longevity. It will survive all conditions.
  • The ASC T2M comes with a lifetime warranty


ASC T2M General Specifications:

  • Maximum water temperature (mains pump): 40°C
  • Maximum recommended continuous pump flow: 120 l/m
  • Maximum recommended pump pressure: 1000 kPa
  • Maximum recommended mains inlet pressure: 1000 kPa
  • No need for float switch
  • WaterMark Level 1 Certification to
  • ATS5200.477:2006,


This device needs an automatic restart controller with a 2.2 bar cut-in to operate. If you are unsure if your pump has this feature, please contact our friendly staff, and we can assist you.



Product Type

Tank to Mains Changeover device

Port Size Inlet



Lifetime Warranty

Pack Weight


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