What does the red line on the dial of the pressure gauge stand for? Is the design pressure or the maximum pressure?
Extreme pressure means that this red mark cannot be reached
There are no red lines on some dials. Where is the red line you mean?
This is the most red table before use, the right table should be added to the school department, refers to the maximum allowable working pressure of the equipment installation, said the pressure to reach or exceed the risk.
