The Halcyon H-50D First Stage is a high-performance diaphragm design is fully sealed and purpose-built for harsh conditions like ice or environmentally contaminated environments. Diaphragm first stages are historically popular with cold water divers, and the Halcyon H-50D was engineered for extreme conditions.
Dive into extraordinary places with your H-50D, and be confident you have a rugged regulator to meet all your demands.
Halcyon H-50D is environmentally sealed
The balanced, environmentally sealed diaphragm first stage performs better in cold water than any other diaphragm regulator while supplying consistent performance at varying tank pressures and depths; you will enjoy smooth, easy breathing throughout your dive.
The dry, balance chamber diaphragm design prevents water entry into the first stage mechanism and enhances a trouble-free operation; this is true even in the coldest conditions.
First stage ports
Two opposing high-pressure ports allow you to choose where to route your SPG and allow the use of accessories. Most Halcyon divers route their pressure gauge to the left, but the Halcyon H-50D allows flexibility with any configuration you choose; these options provide freedom to support personalised and advanced hose routing configurations.
Four low-pressure ports allow you to customise your hose routing for comfort and convenience. The H-50D features four stationary low-pressure ports with high flow options, ensuring the best air delivery with up to 15% more air than other LP ports.
Try the Halcyon H-75P first stage with its 360-degree swivel turret for maximum freedom.
Halcyon H-50D First Stage features
- Balanced, sealed diaphragm
- Dry balance chamber
- 2 x High-pressure Ports
- 4 x Low-pressure Ports (3/8)
- 300-bar DIN, compatible with 40% Nitrox
Want to know more about the difference between Piston and Diaphragm First Stages? Check out Understanding Your Halcyon Regulators to see the difference.