You can convert a conventional gravity system to a pressurised mains fed system removing the tanks in the loft and connecting the cold outlets to the balanced cold, the advantages of this is mains pressure at all hot water outlets, no shower pumps required.
The cylinders can be installed on the ground floor no reliance on gravity.
All pressurised cylinders require a combined set of safety devices such as temperature relief, pressure relief, multi-valve which reduces pressure into the cylinder and expansion vessels both for the heating and hot water.
This is the modern hot water tank and losing minimal temperature through its installation its the most efficient way to heat your water.
