Nozzle tester is a special equipment used to calibrate fuel injector. It can test opening pressure, sealing performance, and spray pattern of the fuel injector with a double-range pressure gauge and two unions. It is widely used because of it's compact structure and convenient operation.

Functions:

1. Test sealing of fuel injector base, fuel injection needle and fuel injection nozzle.

2. Test and calibrate opening pressure of fuel injector. 

3 .Test spray pattern and distributor of fuel injector.

4. Test sound of needle valve vibration.