Wilesco D222 Steam Engine with 110 V Electric HeaterOne of the strongest machines in the Wilesco range is this self starting two cylinder steam engine. The boiler, measuring 6. 5 x 16 cm, has a volume of 530 ccm. The engine unit is installed on a raised base. The two cylinders are controlled by a common steam stop valve. As a special feature, the machine has a transmission with five cord run rollers in three different sizes. Further details: Water drain valve Spring safety valve Steam whistle with