gun utility particularly studied for the provision of poliur - ethane mixed with a gas expanding

摘要

A delivery gun, specifically designed for polyurethane, comprises a body having a delivery tubular element communicating with a vessel holding therein a material to be delivered, and a rod longitudinally sliding in the tubular element and having a conic end portion for engaging a delivery opening of the tubular element, the longitudinal movement of the rod being limited by limit means comprising a rotary element coupled to the gun body and which can be operated from outside, the rotary element being kinematically coupled to an abutment element which can slide with respect to the body due to the rotary movement of the rotary element. IMAGE