It takes pressure to speed to generate a stream of clean water. The orificeenables this conversion. It is characterized by a hole with a very small diameter, ranging from 0.08 mm to 0.5 mm. The top edge of the diamond, ruby or sapphire ruffis very sharp, thus ensuring a consistent water jet. If a sapphire or ruby is used, it must be replaced after 40-200 hours of operation. Using the diamond version will extend her life eight or even ten times.