The VIESSMANN VITODENS 050-W BPJD Pressure Gauge is a compact and energy-efficient storage tank water heater suitable for gas or petrol heating systems. With a tank capacity ranging from 75-150 litres, this boiler offers a high first hour recovery rate of 204 litres/hour. It also comes with a 1-year manufacturer warranty and is compatible with smart home systems for added convenience. This black unit is designed for compact installation in any home heating setup, providing reliable and efficient hot water supply.