Hollow cone spray pattern produces a uniform coating on the inside of pipe, 3” - 18” I.D. The orifice is made of tungsten carbide and the housing of stainless steel. It provides dependable spray performance, accurate flow rate, and long operating life. For use in high pressure spray applications and for spraying abrasive suspensions, paints, coatings, etc. Requires Centering Block (2.11).