BRAND
PIRELLI
MODEL
Tricheco (Walrus)
TYPOLOGY
two stage
CONFIGURATION
mask-regulator - single hose
FIRST STAGE
diaphragm - accumulation tank in the form of a tube near the cylinder
SECOND STAGE Ø mm
upstream - integrated into the full-face mask whose glass acts as a diaphragm
HOSE
central connection under the mask
TOTAL WEIGHT g
-
SPECIAL FEATURES
perforated exhaust conveyors for fractioning air bubbles
NOTE
Galeazzi patent
COUNTRY OF ORIGIN
Italy
YEAR OF PRESENTATION
1955
SOURCE
Giuliano Miniati collection