Sime 6290100 Knob 40 Dia

Sime Control Knob - 40mm Diameter (6290100/SIM). The Sime control knob is located on one of the spindles on the front of the appliance and allows the user to control certain aspects of the appliance's operation manually. Some boilers allow the user to change the temperature, while others allow the user to change the current function. This means that the user can have the boiler produce hot water without turning on the central heating and vice versa. Fits a number of Sime boilers. Colour is White. Genuine brand new Sime product, covered by a Sime manufacturer's guarantee.