Beuchat VRT 30 Manual De Instrucciones página 42

40 > User guide / VRT 80 Evolution
VRT 80 Evolution Technical specifications
EUROPEAN STANDARDS.
All BEUCHAT regulators meet the Eur opean standard EN
250 - 2000 (Air) or EN 13949-2004 (Nitr ox).
1- VRT 80 Evolution SPECIFICATIONS
Yoke 230 bars - 3300 psi (Réf. : 316 032)
DIN 300 bars - 4400 psi (Réf. : 316 033)
VRT80 Evolution is certified "Cold water".
The VRT 80 Evolution r egulator is composed of a balan-
ced diaphragm first stage and a VR T balanced second
stage with Venturi adjustment (Dive mode).
A > V80 Evolution First stage
The balanced diaphragm V80 Evolution first stage
reduces the high pressure air in the cylinder to an adjus -
table intermediate pr essure of 9,6 bars (145 PSI) above
ambient pressure. The first stage is balanced and delivers
air at constant pressure even as the pressure decrease insi-
de the cylinder. A low pressure hose links the first to the
second stage. The first stage featur es four 3/8" LP ports
and one 7/16" HP ports.
B > VRT second stage
The VRT second stage is a pneumatically balanced second
stage, witch offers optimum ease of br eathing. An addi-
tional adjustment allow the diver to fine tune the Venturi
effect to the dive / diver conditions. A specially designed
front cover offers maximum protection to the diaphragm
and minimizes the side ef fect of str ong currents. The
second stage comes from factory with adjustment Venturi
lever in the minus position.
C > Venturi lever
This lever, located on the side of the second stage
Housing, enables the diver to contr
Venturi effect. When on the + position, the diver get
maximum Venturi assistance upon initial inhalation, the
air flow is maintained without additional ef fort.
Important : On the surface to avoid any fr ee flow resul-
ting from surface waves and / or sudden entry in the
water , the diver should keep the lever pushed towar ds
the front in the - / minus position. This position should be
ol the inhalation