Products
Product Center
OrProduct series / CATEGORY
Sales (after-sales) hotline
Positive Pressure Leak Calibration Device
There are two types of standard leak holes: one type, one end of the leak hole is vacuum and the other end is an atmospheric pressure leak, which is called a vacuum standard leak; the other type, one end of the leak is added to the other end of the leak. Leakage gas is often called a positive pressure standard leak.