Polytank are one of the UK's leading manufacturers of cold water storage tanks. The widest range of sizes are currently offered in the market for cold water tanks, also referred to as feed and expansion or F and E tanks. In addition to a ball valve and float, the polytank cold water storage tank 46x24x19 - 50 Gallon includes an installation kit and a byelaw 30 kit. This 227L loft tank is ideal for new builds and as a replacement tank.