Check valve- How complicated can it be?

[xabo]

Have a new Carbon Doser check valve. Can't seem to get anything to go thru it. Shouldn't I be able to blow air thru it with my mouth? Does it take a certain psi for the valve to operate?

 

[theMeat]

You should be able to blow one way but not the other, unless it’s defective

 

[lapin]

you do know its a 1 way valve (directional)

 

[xabo]

I'm thinking it's defective. I can take it apart and depress the ball with a paperclip but it takes some effort.

 

[xabo]

you do know its a 1 way valve (directional)

Yes I do. I can't blow thru either end.

 

[Dburr1014]

I'm thinking it's defective. I can take it apart and depress the ball with a paperclip but it takes some effort.

Need a weaker spring, or no spring... Gravity will stop it.
Edit: if installed vertically

 

[xabo]

Got it going........had to crank up the psi.