Mares has incorporated the top of modern regulator technology into the 28XR-HR underwater regulator. The first stage uses an innovative balanced diaphragm which is operated by a double piston. AST - Auto Sealing Technology guarantees perfect sealing against the possible entry of sand or other particles, especially in cave diving or in polluted waters. The rotating swivel turret with 1 vertical low pressure port and 4 low pressure ports means it can be used in all configurations. Its flexibility allows it to be used: on a double tank, in stages and in a sidemount configuration.
The second stage with a technopolymer body which is simple and ultralight, provides excellent performance. A large side knob allows you to adjust breathing force, even when wearing thick neoprene gloves.
2nd Stage
• For stage, main backmount, back-up backmount or “hard breathing” backmount use
• Extreme cold water use
• Adjustable breathing comfort system allows the diver to control inhalation effort
• VAD system with “curved” bypass for natural high air flow
• Simple, performing, ultralight technopolymer body
• PAD – Pneumatically Assisted Design
• Oversized purge button
• Soft rubber lp hose
1st Stage
• Shiny chrome metal body
• Natural DFC on all LP ports
• TBP Dry Kit - environmentally sealed for better performance on cold water dives
• AST - auto sealing technology
• 4 LP ports on a swivel turret
• A 5th additional in-line LP port
• 2 symmetrical HP ports with a 10° port angle for perfect HP hose positioning
• NR - G5/8 connection, 300 bar (DIN)
• NX - M26 connection, 300 bar (nitrox)
Facts
Material
Ultralight Technopolymer
First stage weight DIN
827 g / 29.2 oz
First stage weight NX
763 g / 26.9 oz
Second stage weight
220 g / 7.7 oz
High pressure ports
2 [7/16" UNF]
Low pressure ports
5 [3/8" UNF]
Second Stage 1
Technopolymer second stage
Second Stage 2
Pneumatically assisted design
Flow Rate (STP)
560 l/min - 20 cuft/min
Weight (without hose)
225 g / 8 oz
Hose length
75 cm / 30 in - 210 cm / 7 ft
Technical specification
First stage weight DIN 300
827 g / 29.2 oz
First Stage Weight NX (300 bar)
763 g / 26.9 oz
Second stage weight
220 g / 7.7 oz
