R105 classic downstream valve design for dependable breathing performance.

• Compact casing includes a durable, anti-scratch front cover and reliable metal barrel inside.
• Hi-Flow mouthpiece improves airflow as well as mouth comfort, fitting all mouth sizes.
• Dive / pre-dive VIVA switch helps control free flows.
• Soft, co-molded purge button for easy purging.
• Reversible hose attachment makes it easy to use for side mount, pony or deco tanks.