john2000 Posted November 26, 2016 Share Posted November 26, 2016 Do you find it effortless to breath out into the mask when using a demand valve? With a simple mask,it is easy for me, With a cluster headache mask 3Lbag I find it more difficult to breath out as the outlet hole is too small and I have to force it out through a relatively small opening. It is clean and 100% assembled correctly , but I do 40LPM at the beginning and that opening is just too small to force the air out.It is easy to breath in at 40LPM becasue the air is being pushed in the mask through the same size opening , but breathing out is done through the same size hole. I will use a splitter at the outlet to get 2 holes and see if that help. How does it work with a demand valve --the breathing out part , is it completely effortless ? or you have to push it out little bit, force it out. ? at 35 to 40 LPM thanks Quote Link to comment Share on other sites More sharing options...
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