Patent ID: 11904504
Assignee: AFROS S.P.A.
Field: Other special machines (Mechanical engineering)
Classification: CPC B  G | IPC B

Claim 30:
31. High-pressure mixing device according to claim 1, wherein in said head-body in said tubular element, at a position diametrically opposed and in front of said mixing chamber and said intermediate transversal hole, one further pass-through hole is obtained, occupied and sealed, during normal operation, by a cap, said further pass-through hole enabling, once said cap is removed, to apply to the head body a further valve element for inletting washing or inerting liquids or gases in order to wash an optional flexible extension duct of the delivery duct or to inject an inert gas into the cavity of a mould in which the reacting resin is injected, between the surface of said cap and the surface of said further pass-through hole a respective gap being defined in which sealing elastic elements are interposed, said gap being provided such that no interference or a metal-on-metal contact occurs between the cap and the further pass-through hole due to deviations of longitudinal and radial alignment of the intermediate transversal hole transversal to the tubular element due to processing tolerances, and that connecting and engagement forces transmitted between said tubular element, the head-body and said spacer chamber are discharged on the head-body through only the annular shoulder zone, and wherein said sealing elastic elements are configured to avoid any leakage of mixture or lubricant liquid towards said further pass-through hole.