BREATHING APPLIANCE Porpoise CA

BRAND
BREATHING APPLIANCE
MODEL
Porpoise CA
TYPOLOGY
single hose
CONFIGURATION
two stage
FIRST STAGE
diaphragm type
SECOND STAGE Ø mm
... - upstream
HOSE
central revolving from the right or the left
TOTAL WEIGHT g
-
PECULIARITY
the Porpoise was the first single hose regulator in the world - Ted Eldred patent of 1952
NOTE
in the image the CA model second series
NATIONALITY
Australia
YEAR OF PRESENTATION
1954
ORIGIN
from the book "The Porpoise"