Yuhsin 250 Series – Balanced Adjustable 2nd Stage Regulators

Yuhsin 250 Series – Balanced Adjustable 2nd Stage Regulators (A250 & X250)

Larger Platform. Greater Breathing Stability. Enhanced Control.

The Yuhsin 250 Series builds on the proven A200/X200 platform with a larger 2.5" body, delivering improved airflow characteristics and a more stable, effortless breathing experience. Available in both composite and metal-core configurations, the 250 series gives divers the flexibility to choose between lightweight performance and enhanced cold-water capability.

Two Versions Available

A250 – ACM Adjustable (Composite Core)

Lightweight and efficient, ideal for travel and general diving.

• Advanced Composite Material (ACM) Internal Core
  Corrosion-resistant and lightweight for all-around use.
• Weight: 205g

X250 – Extreme Adjustable (Metal Core)

Enhanced durability and cold-water performance.

• PVD-Coated Metal Internal Core
  Improves heat transfer and long-term durability in demanding conditions.
• Weight: 240g

Shared Features (Both Models)

• Pneumatically Balanced Design
  Delivers consistent, smooth airflow at any depth or tank pressure.
• Adjustable Cracking Pressure (0.8–2.0 CIW)
  Fine-tune breathing resistance to suit your preference.
• Venturi Control (Dive / Pre-Dive)
  Prevents free-flow at the surface and optimizes airflow underwater.
• Ultra-Low Work of Breathing (WOB: 0.8 J/L)
  Provides exceptionally smooth, effortless breathing performance.
• Larger 2.5" Body Diameter
  Improves airflow stability and overall breathing smoothness.
• Cold Water Rated (2–4°C)
• EN250A Certified
• CE Certified (#0078)

Why Choose the 250 Series?

The 250 series is designed for divers who want a more substantial second stage feel with premium-level breathing performance.

• Choose the A250 for lightweight versatility and everyday diving.
• Choose the X250 for maximum durability and enhanced cold-water reliability with its metal core construction.

Technical Specifications