The Tecline R4 TEC – EN250A first stage is engineered for divers who demand uncompromising reliability, stable airflow, and dependable operation in cold‑water and advanced technical environments. Compact, durable, and fully compliant with EN250A, it delivers exceptional breathing performance even under high workload and low‑temperature conditions.
Balanced diaphragm for consistent breathing
The R4 TEC uses a balanced diaphragm mechanism, ensuring stable intermediate pressure and smooth breathing throughout the dive.
- Consistent airflow at all tank pressures
- Predictable breathing effort at depth
- Suitable for technical and recreational configurations
- Optimised for cold‑water performance
Dry chamber + cold kit for freeze protection
Designed specifically for low‑temperature diving, the R4 TEC features a dry chamber combined with an additional cold kit.
- Prevents water entry into the ambient chamber
- Reduces the risk of ice formation
- Enhances reliability in cold‑water conditions
- Supports safe operation during high‑flow technical dives
Maritime bronze body for durability
Constructed from maritime bronze, the R4 TEC offers long‑term durability and corrosion resistance.
- Robust material for harsh environments
- Excellent resistance to saltwater and cold‑water exposure
- Compact, streamlined body for efficient hose routing
Optimised port configuration
The regulator provides a practical port layout suitable for multiple diving setups:
- 2 HP ports
- 4 LP ports
- DIN 300 bar connection
- Clean hose routing for stage, twinset, or single‑tank use
It is not recommended to use this first stage in a sidemount configuration.
