Feed control means for oil burners, especially for heating plants
865,674. Valves. MISSION MANUFACTURING CO. Dec. 3, 1957, No. 37584/57. Class 135. In a liquid feed control device, particularly for oilfed burners, the liquid passes through a passage 9 provided with main and auxiliary valves 12, 33 respectively operated by floats 13, 18 in a common casing 1 and so...
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