YAW-300S fully automatic flue pressure tester is used to test the vertical bearing capacity of the finished product of the flue and exhaust duct, which fully meets the standard "JG / T194-2018 residential kitchen and toilet exhaust duct". The control mode of the flue pressure tester adopts automatic control, and the user can compile the test process control mode according to his actual requirements to automatically complete the test. It can realize continuous load and hold load function under any load. The test process can realize simulation reproduction.