When does SP D350 breathe wet?
- Thread starter ericpitar
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Water is probably seeping in to it all the time. It's just that in other positions it is expelled when you exhale so it doesn't get to your mouth.
When my regs get to breathing wet, I like to verify that it is the exhaust valve before I do the replacement. Sometimes it is a bad mouthpiece seal, pin hole in the diaphragm, or even a cracked case (damn plastic regs).
Start with a vacuum test to verify it is leaking. Then it's a matter of inspection and investigation. You may have to take the dry reg and submerge the diaphragm/exhaust valve while keeping the mouthpiece out of the water and then check for wetness. I guess you could even use a little powder inside the reg to help locate the leak if necessary.
Just thinking about this makes me appreciate my not quite as good breathing metals even more.
Good luck
When you are upside down and looking straight ahead, the diaphragm and co-axial exhaust valve are located on top of the second stage. As air is exhaled, some water slips past the exhaust valve and falls down to the "top" of the regulator where it can be drawn in on the next inhalation.
The same thing happens when air is exhaled from any second stage if the reg is oriented so that the exhaust valve is elevated above the mouthpiece.
Water also slips past the exhaust valve all the time during exhalation on any second stage, those few drops just pool in the bottom of the reg and are blown out the exhaust valve on the next exhalation.
If it breathes wet in a normal swimming position, then you need to suspect a leaky diaphragm and conduct a vacuum test.
The same thing happens when air is exhaled from any second stage if the reg is oriented so that the exhaust valve is elevated above the mouthpiece.
Water also slips past the exhaust valve all the time during exhalation on any second stage, those few drops just pool in the bottom of the reg and are blown out the exhaust valve on the next exhalation.
If it breathes wet in a normal swimming position, then you need to suspect a leaky diaphragm and conduct a vacuum test.
I tested in just about every position, including the normal swimming position and sideways but only notice the water once I turn upside down. I will have this inspected by a tech but it's good to get some feedback ahead of time.
Thank you both!
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Thank you both!
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