Yuhsin Project-37 (A22 Metal) – 2nd Stage Regulator
Precision Breathing. Built for Cold Water.
The Yuhsin Project-37 (A22 Metal) second stage regulator is engineered for divers who demand consistent performance in challenging conditions. With a fully metal construction and advanced pneumatic balancing, it delivers smooth, controlled airflow and enhanced reliability—especially in cold water environments.
Key Features
-
Pneumatically Balanced Design
Ensures stable, effortless breathing performance at all depths and tank pressures.
-
Full Metal Chamber Construction
Improves durability and enhances thermal conductivity for cold water diving.
-
Cold Water Optimized (2–4°C)
Integrated metal heat exchange system reduces the risk of freezing in low temperatures.
-
Venturi Control (Dive / Pre-Dive)
Easily switch airflow characteristics to prevent free-flow at the surface and optimize breathing underwater.
-
Adjustable Cracking Pressure (0.8–2.0 CIW)
Fine-tune inhalation resistance to match your personal preference.
-
Low Work of Breathing (WOB: 0.8J)
Designed for efficient, comfortable breathing with minimal effort.
-
Recessed Purge Button
Minimizes accidental purging while maintaining easy access when needed.
-
Ergonomic Exhaust Design
Reduces exhalation resistance for a more natural breathing experience.
Build & Materials
-
Zirconia PVD Coating over Chrome Plating
Enhances corrosion resistance, durability, and long-term finish quality.
-
Compact, Robust Housing
- Diameter: 2.5 inches
- Weight: 232g
Certifications
- EN250A Certified
- CE Certified (#0078)
Meets stringent European standards for safety and performance in demanding diving conditions.
Available Colors
- Black with Orange
- Black with Blue
- Black with Gray
- White with Orange
- White with Blue
- White with Gray
Why Choose the Project-37?
If you regularly dive in colder waters or want a regulator that balances durability with refined breathing performance, the Project-37 stands out. The all-metal construction isn’t just about strength—it actively improves thermal performance and breathing stability where it matters most.
Technical Specifications
| Connections |
9/16"
|
| Type of first stage |
n/a
|
| Body Type |
Composite
|
| Number of HP ports |
n/a
|
| Number of MP ports |
1
|
| Environmental Dry Kit |
n/a
|
| First stage exterior |
n/a
|
| Orientation |
right-handed
|
| Coldwater Use |
Yes |
| Type of second stage |
Pneumatically balanced
|
| Opening Effort Control Knob |
yes |
| Integrated Venturi Lever |
Yes |
| Mouthpiece |
yes |
| Exhaust tee |
standard |
| Heat Exchanger for freezing resistance |
yes |
| Hose type |
9/16 LP |
| Nitrox compatible |
Yes to 40% O2 when new, out of the box |
