in the flux the flux is then distributed to each high speed valve or regulator 52 through a fitting 54 mounted on the main manifold each valve or regulator then is actuated at a specified pulse rate to distribute flux to an individual tip 66 or to a tip manifold assembly 50 the controls define the pulsed streams 66 or tip manifold 50 which will be activated for the particular board width sensor 32 fig3 can also be used if an end of dispense signal is desired before sensor 30 is deactivated as may occur if the board is palletized the pulsed flux application can also be controlled to be applied or not applied at any location on the board as the board travels past the pulsed application through the use of low solids flux and pulsing at a range of on times of one to forty milliseconds and off times of three to two hundred milliseconds a very thin layer of flux is applied to the selected surface of the board for example tests have suggested application of a coating of flux in the amount of 0 0012 g in2 with a pressurized fluid at five psi and a pulse ratio of fifteen milliseconds on time and one hundred milliseconds off time as shown.