butterflyballoon

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1. The valve

   butterflyballoon replied to butterflyballoon's topic in Pre-Nursing Students

   Thx for reply :) Btw, I refer the non breathing n breathing mask frm this: http://www.ehow.com/facts_6084936_rebreather-vs_-non_rebreather-mask.html I juz unsure the difference of the valve frm them n...

2. The valve

   butterflyballoon posted a topic in Pre-Nursing Students

   Sry for my stupidness firstly! May someone can kindly help me to ans this: What's the valve differences between non-rebreathing &breathing mask? Both them are in one-way valve system but how can...