1.      Features: 1,The design, manufacturing, supervision and inspection of the boiler are all strictly carried out as Steam Boiler Safety Supervision Order, JB/T 10094-2002 General Specification for Industrial Boilers, JB/T 1619-2002 General Manufacturing Technical Conditions of Pot Shell Boilers to ensure the boiler works safety and stability. 2,The boiler body is shell type parallel-flow three-pass firework tube structure. Flame can be fully extended and burned in the micro-positive pressure in the large combustion chamber. The combustion heat load is low and it has less emission of harmful substances NOx. 3,The boiler has the inner hull of wave shape and fire tube structure, which improve the intensity and meet the needs of each parts' thermal expansion. 4,The main welding seams are all use docking connection and they are passed X-ray and nondestructive testing to ensure that the welding quality achieves national requirements . 5,The boiler has large water volume, air space and strong ability to adapt to the load. The rational design of pot devices ensures the steam and water rates are less than 4%, which meets the higher requirements of the users about the steam quality. 6,The boiler uses new type heat insulation materials, light weight, less heat loss and good insulation performances. 7,The water level alarm uses stainless steel as the electrode rod and PTEE for insulation material. It is inserted from the top and not easily linked to pollution, which ensures its reliable performance and long service life. 8,The smoke box is connected by hinge before and after and can be easily open, repair and maintenance conveniently. Protective Device Function 1,Patent Technology and Automatic Decontamination Function: The control system detects the concentrations of water ions in a real time way. When the concentration exceeds a set value, the drainage electromagnetic valve will automatically open and achieves automatic sewage. Then the water pump starts to inject new water, which makes the heating surface is not easily scaled. 2,Water Level Real-Time Monitoring Function: It is equipped with electronic detection of water level device. It can monitor the boiler water level in a real time way. 3,Time Function: The user can set up the boiler stop time according to the needs. 4,Both before and after are living for outsourcing cover. The replacement of heating tube operation is more convenient and faster. Protection 1,Patent Technology and Scale Detection Device: Once the furnace scale exceeds, the system will alarm promptly. 2,Leakage Protection Function: When the control system detects the leakage of electric heating elements, it will cut off power automatically. 3,Water Protection: When the boiler is short of water, it will cut off the heating tube control circuit to prevent the occurrence of drying heating damage and at the same time the controller will send water alarm. 4,Power Abnormal Protection Function: The boiler stops running immediately. 5,Overpressure Interlock Protection: When the boiler pressure exceeds a set value, the heater will stop working and alarm promptly. 6,Overcurrent Protection: When the boiler works overload(voltage is too high), the leakage circuit breaker will disconnect automatically.