The Tecline R4 TEC O₂ is an oxygen‑clean, compact first stage regulator designed specifically for decompression and high‑O₂ mixtures. Built with a balanced diaphragm, dry chamber, cold‑water kit, and an M26x2 oxygen‑dedicated connection, it delivers stable breathing performance and EN250A‑certified reliability for technical diving applications.
Balanced diaphragm for precise, stable breathing
The R4 TEC O₂ uses a balanced diaphragm mechanism, ensuring consistent intermediate pressure and smooth airflow throughout the dive — even as cylinder pressure drops.
- Stable airflow at all tank pressures
- Predictable breathing effort at depth
- Ideal for decompression mixes and oxygen‑rich gases
- Certified for cold‑water technical use
Oxygen‑clean construction (O₂ version)
This model is prepared specifically for oxygen service, making it suitable for high‑percentage O₂ mixtures used in decompression procedures.
- Dedicated M26x2 O₂ connection
- Cleaned and prepared for oxygen‑rich gases
- Designed for safe use with deco cylinders
- Ideal for technical diving protocols requiring O₂‑ready equipment
Dry chamber + cold kit for freeze protection
The R4 TEC O₂ includes both a dry chamber and an additional cold kit, ensuring reliable operation in low‑temperature environments.
- Prevents water entry into the ambient chamber
- Reduces risk of ice formation
- Enhances stability during high‑flow O₂ delivery
- Suitable for cold‑water decompression stops
Maritime bronze body for durability
Constructed from maritime bronze, the R4 TEC O₂ offers long‑term corrosion resistance and mechanical stability.
- Excellent resistance to saltwater exposure
- Durable construction for technical environments
- Compact, streamlined body for efficient hose routing
Optimised port configuration
The regulator provides a practical port layout suitable for decompression and technical setups:
- 2 HP ports
- 4 LP ports
- DIN M26x2 O₂ connection
- Clean hose routing for stage/deco cylinders
Recommended use
- Stage / Deco cylinder – perfect
- Twinset – very good (as O₂ deco regulator)
- Single‑tank – good (O₂ applications only)
- Sidemount – not recommended
