The idea of preheating the Maple Sap prior to entry in the flue pan is not a new idea. Many methods of preheat- ing have been tried over the years with a variance of results. Through research and actual field testing
by the Northeast Forest Experiment Station, we feel the parallel flow preheater, combined with a steam hood that is rea- sonably tight, will offer the most in increased efficiency.
Parallel Flow Copper Preheater Assemblies come com- plete with brackets, adjusting rods and condensate trays.
NOTE: For bestperformance and efficiency, the above preheater assembly should be used with a tightfitting steam hood, damper controlled.