Fluid discriminating apparatus

摘要: Apparatus is disclosed for discriminating between desired and undesired fluids such as kerosene. The apparatus especially adapted improving the safety of kerosene heaters by suitable heater use more volatile materials gasoline. Structure to terminate flow fluid a in response sensed presence other than According preferred form apparatus, additional structure provided prevent fueling that operatively associated with structure. specific aspects discriminator, float including magnetic or light-responsive actuators calibrated permit cease supply responsive position fluid. A less dense kerosene, gasoline, will cause sink within thereby heater.