APEKS ATX-50

[Remy B.]

Is it normal that a APEX ATX-50 pass a little water when one is vertically inverted in the water ?( head down, feet up )

2nd stages were tuned in April and seats changed, but it happen before this and after it as well.

 

[tbone1004]

yes, most all second stages will do that because the exhaust valve is under positive pressure from the air in the second stage so it will leak a little. completely normal

 

[Remy B.]

yes, most all second stages will do that because the exhaust valve is under positive pressure from the air in the second stage so it will leak a little. completely normal

Thanks, I was under the wrong impression that it shall not allow any water pressure regardless of regulator position in the water as it see differential pressure.

 

[tbone1004]

@Remy B. sadly not. The exhaust valve is free on the edges unlike the inhalation valve so while it can take negative pressure without leaking *what it sees when you inhale*, when there is any positive pressure *if the diaphragm is "up"* then it will allow a bit of water to come in during the exhalation cycle. All regulators are prone to it however some are more sensitive to it than others. Apeks are usually pretty good