System and machine which requires valve that is low price, can make precise cut-off, and can adjust flow rate. For factory air line, control panels, gauge cut offs, hydraulic pressure, bent, instrumentation equipment, experimentation, research.
It is surely opened and closed according to the description of the item with the needle valve type, and it can be used without any problem even in a high vacuum state of 15 microns. Also, you can see the high quality of the product itself in appearance. I am very satisfied. Compactness is also wonderful.