Mares 75XR AST, first stage

• 4 vertical and 4 radial LP ports (3/8” UNF)
• Two pre-oriented HP ports
• Perfect, snag-free LP hose positioning
• Full metal body
• Chrome-plated marine brass
• Compact, solid, one-piece body
• Balanced diaphragm – DFC preferential flow path
• Extreme reliability – highest safety
• New ACT valve - Advanced Coating Technology
• Maximized breathing comfort
• Environmental dry system = Keeps water out of the main spring chamber + prevents ice buildup + keeps silt and contamination out
• Cold water resistant
• DIN only
• Designed for extreme depth, demanding dives & mixed gas diving (helium, o2, nitrogen)
• For twinset use but equally suitable for single or stage cylinder configurations

AST- Auto Sealing Technology

• Keeps the first stage dry. reliability without compromise
• The system is automatically activated by air
• Tested with oxygen and cold temperatures in demanding environments
• Patented system