ZAC welding nipples are manufactured with a dovetail end to match GY type dovetail nozzle tips. One end of the nipple is fastened onto the pipe and the other end to the nozzle tip by means of a VAA locknut. The dovetail design of these nipples keeps them properly orientated in the desired position, thus shortening time for nozzle tips cleaning and orientation adjustments.
For more information, click the pdf for data sheet.