Navac, Lyndhurst, New Jersey, has introduced their new cordless vacuum pump – the NP4DLM. It is suitable for residential and light commercial applications and achieves a flow rate of four cubic ft. per minute (cfm). The model is the third unit in the BreakFree Series of cordless HVAC tools. The NP4DLM’s twin cylinder operation provides high vacuum down to 15-microns. Its inlet port fits flares of quarter inch, three-eighth inch, and half-inch.