Halcyon H-50D First Stage Regulator

Balanced, Environmentally Sealed Performance

The Halcyon H-50D First Stage Regulator is engineered for divers who need dependable breathing performance in a wide range of conditions—from warm tropical reefs to cold, silty, or contaminated waters. Featuring a balanced, environmentally sealed diaphragm, the H-50D provides stable, smooth airflow at any depth or tank pressure while protecting critical internal components from the elements.

Its dry balance chamber prevents water intrusion, reduces the risk of freeze-up, and extends long-term durability, making it a strong choice for both recreational and technical divers. The H-50D includes two high-pressure ports and four low-pressure ports, including high-flow LP outputs that can deliver up to 15% more air, supporting efficient hose routing for single-tank or advanced configurations.

With a rugged 300-bar DIN connection—convertible to yoke (optional)—and compatibility with up to 40% Nitrox, the H-50D offers flexibility for a wide range of diving applications.
Reliable, precise, and built to last, the H-50D is ideal for divers who demand clean performance in even the harshest environments.

Specifications

Balanced, sealed diaphragm design

Dry balance chamber for cold-water and contamination protection

Two HP ports & four LP ports (high-flow capable)

300-bar DIN connection, optional yoke adapter

Compatible with up to 40% Nitrox

Bench testing by an authorized Halcyon regulator technician is recommended prior to use