A valve-type nozzle (10) is provided for use in hot runner systems through which a plastic material melt is fed under high pressure to a separable and coolable tool having at least one mold cavity (K) for injection-molded items. The nozzle is heatable and comprises at least one needle valve (20) supported...http://www.google.se/patents/US6273706?utm_source=gb-gplus-sharePatent US6273706 - Valve nozzle having a pressure-relief means
