sorry for my english,
I have a question:
does it exist something which redirects exhaled from mouth air into another part of
snorkel - not to the snorkel tube by which oxygened air is inhaled?
In a decathlon shop was told me that in those masks:
that can be achived because this mask have valve which prevent air to get away
by the same way by which it was inhaled (so it has "in" and "out" tube)
- but I think this valves are not sufficient -
I tried to use it but it was also possible to breath with clogged holes which should
only be used for incomming air (air was also getting in by "outgoing" tube).
Maybe in "diving" world exists something which has this feature and is not too expensive?
I was thinking to make it by my own with check valve and this mask - did someone try to do
this or it is possible to make it? This face mask + something like check valve is convient
because it do not "disturbs work" and it is possible to talk during usage but any other
existing solution also will be welcome.
thanks for help in this corona times