Weller soldering iron fume tip extraction systems weller t0053638699 the weller wfe p is a line voltage fume extraction unit designed to run with one or two fe fume extraction soldering irons it uses an electric long life soundproofed vacuum pump to produce the required vacuum it does not need a compressed air supplythe vacuum pump has two power settings which can be selected by means of rocker switches depending on the number of fe soldering irons connected to the unit saving energy