Powertank COFFIN Dual 900ltr - Variable Speed Whole House Water Pressure Booster A Dual Powertank system will give you double the water storage capacity of a single unit. Having the total water storage split between two tanks allows for easier movement and flexibility when installing the systems. The Powertank Coffin range is designed for houses and apartments where there is low mains water pressure and where pressure fluctuates. It is electronically controlled through a flow switch unit which starts and stops the pump automatically when a tap is opened and closed. The Powertank Coffin 450ltr tank is designed for areas where height restrictions and access are an issue. Key Features: - Non-corrosive holding tank (WRAS approved material)- Pre-fitted WRAS approved fill valve- Minimal installation requirement- Adjustable digital display flow controller (Variable Speed Option)- Dry run protection with auto restart (time delay)- AF Air gap- Suitable for up to Fluid Category 4 System Connect