Demag
Thermostat for Demag AC 300
This thermostat regulates the engine coolant flow to maintain the correct operating temperature for the Demag AC 300 all-terrain crane. It manages the thermal cycle by controlling circulation between the engine block and the radiator.
Compatible models
Specifications
- Part number
- 44011812
- Brand
- Demag
The thermostat 44011812 serves as a flow control valve within the engine cooling system of the Demag AC 300 crane. By modulating the path of the coolant, it ensures the engine reaches and maintains its specified thermal range during operation. When the engine is below operating temperature, the valve remains closed to restrict coolant flow, allowing the engine to warm up quickly. As temperatures rise, the internal mechanism activates to open the valve, directing coolant through the radiator to dissipate heat and prevent overheating.
This component is designed specifically for integration into the Demag AC 300 mobile crane engine assembly. It is calibrated to respond to precise temperature thresholds to ensure consistent thermal management. Proper function of this valve is necessary for the cooling system to effectively manage heat transfer under the varying operational demands placed on heavy machinery engines.
In any internal combustion engine, a thermostat acts as the primary regulator for the cooling circuit. By cycling coolant based on temperature, it prevents the engine from running too cold, which can lead to inefficient fuel combustion, or too hot, which risks damage to internal engine components. Regular maintenance of this component ensures the cooling system operates as intended.

