nozzle tester initiatve injeting press of injector 2.sound of needle valve vibration 3.spraying shape 4.sealing function of needle valve and nozzel body mating pair 5.sealing functon in response to press Main tech parameter Max. test pressure 40 mpa Out dimension: 32 0×300×500 Net weight: 20kg Pressure gauge test range: 0-60mpa