Control.com - Nerds in Control

We use automatic ball type control valves (open/close). Hydrogen leaks through these valves, which is very critical for hydrogenation reaction. Can you please suggest what type of automatic valves provide 100% seal. These valves are just open/close (no control).

Thank you.

Google bubble tight.

I purchased a soft seated control valve for this application. It lasted only 27 days before it starts leaking. This valve has a 3/8" hole in the ball. I guess this is to avoid over pressure in the cavity.

The valves were not assembled with actuators. With our process the liquid flow is in one direction and has higher pressure on the side that the liquid enters (15 psi Liquid elastomer), then the valve is closed and the opposite side has high vapor pressure that must seal off in the opposite direction (430 psi Hydrogen). Which way should the "Flow" arrow point and which side should the ball face that has the hole?

Appreciate your suggestions.

Mahesh Datla