Check Valves for CO2

[fish_4_all]

I hate the ones I am using, they never, NEVER, work. Brand new or old ones, they never work.

Can anyone recommend ones that will actually keep the CO2 from coming out when I am trying to change the bottles?

 

[J. Fisher]

The ADA checkvalve is a good one. It has outlasted two others I had. Although the only place I have found these are locally here in San Francisco.

 

[Zezmo]

The ADA checkvalve is a good one.

Is that the "Red Ruby" glass check valvle?