ventile fu'ivla

x1 is a valve


On gloss:

varbasygau
x1=g1 ventilates fresh air x2=b1 for stale air x3=b2 in circumstances x4=b3
varbasygauca'a
x1=c1=g1 is a ventilator letting air x2=b1=v1 flow in and expells stale air x3=b2
vaxydjuca'a in sense "medical equipment"
x1=c1=s1 is a ventilator for helping x2=s2 to breath