Finger valve series VHK has a large effective area of 2.0 to 17.5mm². This series begins with a minimum tube O.D of ø4. The valve direction clearly indicates whether the valve is open or closed (shut to open is counter- clockwise). Classification of knob by color difference facilitates distinction between 2 port valves (gray) and 3 port valves (blue). The optional flame resistant model's knob, whether using the 2 or 3 port valve, is red.

The 25A-VHK series is designed using materials compatible with secondary battery applications and are able to be used in low dew point environments.  The variatons eliminate copper (Cu) and zinc (Zn) materials where possible, making them compatible with secondary battery manufacturing for electronics, automotive, and other vehicle types.