The MK11 / S270 is easy to use, compact and durable. The balanced diaphragm MK11 EVO delivers effortless airflow unaffected by depth, tank pressure or breathing rate. The compact S270 provides smooth breathing performance in an anti-scratch design that’s able to handle years of hard use.

Compact, air-balanced diaphragm design, MK11 EVO delivers top performance and reliability

Forged brass body comes with metal fins to improve thermal exchange plus plastic bumpers to prevent scratching

Innovative double spring layout increases performance while contributing to overall compactness

Two high pressure ports are set on a 15-degree angle for convenient hose routing.

Four high-flow low pressure ports increase airflow while maximizing hose routing options.