The Triton AS2000XT Thermostatic Power Shower - White is ideal for low water pressure systems. It has an integral pump which provides you with a powerful shower. This shower is also designed specifically for use with gravity-fed hot and cold water supplies from a header tank (hot via a cylinder). This shower is simply wired to a ring main via a local 3A fused spur. Your selected water temperature remains constant as long as there is hot water in your cylinder. The AS2000XT Thermostatic achieves this through its thermostatic temperature control, which compensates for any changes in water temperature to the shower, caused by hot or cold spots in your hot water cylinder.