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Brazing hearth air pressure

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Meldonmech:
Hi Guys

                 Anyone know the air pressure in psi to operate a brazing hearth.

                                                                                                                       Cheers David

John Rudd:
 Depends on the gas being used (propane/butane/nat gas)and the gas pressure......gas jet size comes into it too....

Meldonmech:
Hi John
                 I have a Reil type burner, using propane gas and a jet size of 1mm dia. The gas has a variable pressure control, and the air intake is varied by a shutter on the venturi.  This unit has been excellent for melting aluminium in my furnace. I have aquired a new centrifugal fan used for a combi central heating unit, and would like to build a brazing hearth based on the furnace burner but with air pressure, to give me a more variable and hotter flame. Thanks for your comments.

                                                                                    Cheers David

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