ZPL pipe clamps are specially designed for swivel ball nozzles. You just have to drill a hole in the sewer and fix the clamp with the spring(s). Body is made of PP, chemically bonded fiberglass, while the spring is made of AISI 302 (or 316). ZPL swivel nozzles work under high temperature and high degree of intensity. ZPL swivel nozzle pipe clamps are widely used in surface pre-treatment.