A testing arrangement for testing injection nozzles in a nozzle holder combination, has a first testing circuit provided with a first pump for a hydraulic pressure medium and arranged for testing nozzles as to the throughflow, and a second circuit provided with a second pump for the hydraulic pressure...http://www.google.de/patents/US4428228?utm_source=gb-gplus-sharePatent US4428228 - Testing arrangements for multi-testing injection nozzles
