Flow Control Valve

F.C.V is a mechanism that can control only the flow rate without changing the initial resistance. The initial resistance does not change because it does not depend on the spring. Therefore, it is a breakthrough mechanism that responds to two themes, “flow rate” and “sucking comfort” at the same time. The diver can control the flow rate arbitrarily according to the personal vital capacity, respiratory pattern, and diving depth, enabling comfortable diving.

Exploisting for underwater shooting

Exploisty designed so that the exhaust bubbles flow behind the chin. Even when you look into underwater video or camera viewfinder, you will not feel stressed to check the composition and focus because the foam does not come in front of the mask.

Adoption of balance twisting Impiston method

In addition to the main piston, it is a BISM unique mechanism that incorporates a subpiston (high pressure rod) to keep the medium pressure value of the first stage constant. This mechanism does not affect the residual pressure in the tank and keeps the medium pressure value constant. We promise safe and comfortable diving to ensure stable breathing underwater.

(Fig. 1) The force generated by the subpiston (high -pressure rod) cancels the force applied to the high -pressure seat. Therefore, it is not affected by the remaining pressure of the tank and keeps the medium pressure value in the first stage constant. (Fig. 2) This is a mechanism with less flow rate because the air does not pass through the thin holes of the main piston.

Model compatible with low water temperature (4 ° C) of the lightest class

The first stage is made of titanium with low thermal conductivity, and the use of resin parts for the water pressure sensory department, which is more sensitive to the temperature, is highly performed in low -water temperature environments.