ScubaPro MK21 First Stage Scuba Diving Regulator

This is the ScubaPro MK21 First Stage Scuba Diving Regulator

Features:

• Compact-Sized Piston-Controlled First Stage
• Close to 20% Smaller than Scubapro's MK25, Great for Travel
• Mid-Range Air Balanced, Flow-Thru-Piston-First Stage
• Ultra-Fast Breathing Response
• MK21 First Stage: Best Compromise for Right-Price & Performance w/Ease-of-Maintenance
• Machined, Marine-Grade Chrome Plated Body
• Balanced Composite/Stainless Steel Flow-Thru Piston
• Thermal Insulating System (TIS)
• High Performance in Warm and Cold Water to 3336 psi (230 bars)
• HP Ports: 2
• 4-HF (High Flow) LP Ports with Hose Routing at +/- 20° Angles

A new compact, balanced piston-controlled first stage with exceptional SCUBAPRO breathing performance at a mid-range price. The high airflow delivery to the second stage ensures unaffected breathing effort, no matter the tank pressure or depth. Very good resistance to freezing for a compact first stage, due to the external fins which optimize thermal exchange. Compact in size (16 mm smaller than the MK25) but not in features, this modern, striking first stage has a 'smart' hose layout for perfect positioning and easy identification. The standard cap ( /- 20 routing) can be replaced with an optional cap, which has 4-hose low-pressure routing configurations (0/30) and a 5th central High Flow LP port.