1. Introduction
This manual provides essential information for the safe and proper use, maintenance, and care of your SCUBAPRO BT/MK19 G260 Evo Carbon Black Tech Dive Regulator System. This system is designed for certified scuba divers and is a critical piece of life-support equipment. Read this manual thoroughly before using the regulator.
2. Safety Information
WARNING: Scuba diving is inherently dangerous. Improper use or maintenance of this equipment can lead to serious injury or death. This regulator must only be used by individuals who are certified in scuba diving by a recognized agency.
- Always perform a complete pre-dive safety check before each dive.
- Never attempt repairs or modifications to the regulator yourself. Only authorized SCUBAPRO technicians should service this equipment.
- Ensure your air supply is clean, dry, and breathable.
- Familiarize yourself with all components and their functions before diving.
- Always dive within your training and experience limits.
3. Product Overview
The SCUBAPRO BT/MK19 G260 Evo Carbon Black Tech Dive Regulator System combines a high-performance first stage with a lightweight, durable second stage, optimized for various diving conditions.
- Lightweight Carbon Fiber Design: The G260 second stage is 24 grams lighter than the standard G260, enhancing comfort without compromising durability.
- Increased Freezing Resistance: Internal metal components in the second stage and an environmentally sealed first stage with a dry chamber provide superior cold water performance.
- Optimized Hose Routing: The convenient swivel turret on the first stage maximizes hose routing options, particularly beneficial for technical divers.
- Enhanced Breathing Sensitivity: A large casing and diaphragm on the second stage improve breathing sensitivity in various underwater positions.
- Diver-Adjustable Inhalation Effort: A knob on the second stage allows fine-tuning of air delivery to suit dive conditions.
- VIVA Dive/Pre-Dive Switch: Prevents free flows in cold water or when the second stage is used as an octopus.
- Super-Flow Hose: An oversized bore allows more air to flow on each inhalation.
- High-Flow Exhaust Valve: Reduces exhalation effort for improved breathing comfort.

Image: Detailed diagram illustrating the MK19 EVO DIN BT first stage and G260 BT second stage components.
4. Setup Instructions
Before assembly, ensure all components are clean and free from debris. Refer to the included components list for verification.
4.1 Included Components
- MK19 EVO BT D300/G260 CARBON Regulator System
- 01.094.119 FLOCK PAD
- 43.021.000 4MM ALLEN KEY
- 45.101.180 Manual (this document)
- 53.046.000 REGULATOR BAG
4.2 Connecting the First Stage (DIN)
- Ensure the cylinder valve is clean and free of dust or moisture.
- Inspect the O-ring on the DIN connector of the MK19 EVO BT first stage for any damage. Replace if necessary.
- Screw the DIN connector into the cylinder valve until it is hand-tight. Do not overtighten.
- Slowly open the cylinder valve to pressurize the system. Listen for any leaks.
4.3 Connecting the Second Stage and Gauges
- Connect the G260 second stage hose to one of the low-pressure ports on the first stage.
- Connect your pressure gauge and/or console to one of the high-pressure ports on the first stage.
- Connect any additional low-pressure accessories (e.g., BCD inflator hose, octopus regulator) to the remaining low-pressure ports.
- Ensure all connections are secure and O-rings are properly seated.

Image: The assembled SCUBAPRO BT/MK19 G260 Evo Carbon Black Tech Dive Regulator System, ready for use.
5. Operating Instructions
5.1 Pre-Dive Checks
- Visual Inspection: Check all hoses, O-rings, and components for signs of wear or damage.
- Air Supply: Slowly open the cylinder valve fully, then turn it back a quarter turn. Check your pressure gauge to ensure adequate air supply.
- Breathing Test: Place the second stage in your mouth and inhale deeply. The air should flow smoothly and easily. Exhale to ensure the exhaust valve functions correctly.
- Purge Button: Press the purge button to ensure a steady flow of air.
- VIVA Switch: Ensure the VIVA switch is set to the 'Pre-Dive' position to prevent free flow before entering the water.
5.2 Underwater Operation
- Once in the water, set the VIVA switch to the 'Dive' position.
- Adjust the inhalation effort knob to your preferred breathing resistance. Turn clockwise for more resistance, counter-clockwise for less.
- Breathe naturally and calmly.

Image: Graphic illustrating the concept of natural, smooth breathing provided by the regulator.
6. Maintenance
Proper maintenance is crucial for the longevity and safe operation of your regulator.
6.1 Post-Dive Care
- Before disconnecting from the cylinder, ensure the cylinder valve is closed and purge the regulator to release residual pressure.
- Immediately after each dive, rinse the entire regulator system thoroughly with fresh, clean water. Ensure the dust cap is securely in place on the first stage to prevent water entry.
- While rinsing the second stage, gently press the purge button a few times to flush out any salt or debris.
- Allow the regulator to air dry completely in a shaded, well-ventilated area, away from direct sunlight.
6.2 Storage
- Store the regulator in a clean, dry place, preferably in the included regulator bag, away from extreme temperatures, chemicals, and direct sunlight.
- Avoid kinking or sharply bending the hoses during storage.
6.3 Professional Service
Your SCUBAPRO regulator requires periodic professional servicing by an authorized SCUBAPRO technician. It is recommended to have your regulator serviced annually or after 100 dives, whichever comes first, to ensure optimal performance and safety.

Image: A detailed view of the G260 Evo Carbon Black Tech second stage, highlighting its design for easy maintenance access.
7. Troubleshooting
This section addresses common issues you might encounter. For any problems not listed or if solutions do not resolve the issue, contact an authorized SCUBAPRO dealer.
| Problem | Possible Cause | Solution |
|---|---|---|
| Regulator free flows | VIVA switch in 'Dive' position out of water, cold water, impact, or internal issue. | Set VIVA to 'Pre-Dive' out of water. If in cold water, try warming the second stage. If persistent, seek professional service. |
| Hard breathing | Inhalation effort knob too high, dirty filter, or internal issue. | Adjust inhalation effort knob counter-clockwise. If persistent, seek professional service. |
| Air leak from connections | Damaged or improperly seated O-ring, loose connection. | Check O-rings and tighten connections. Replace damaged O-rings. |
| Pressure gauge reads zero or fluctuates | Cylinder valve closed, gauge malfunction, or first stage issue. | Ensure cylinder valve is fully open. If issue persists, seek professional service. |
8. Specifications
| Feature | Description |
|---|---|
| Model Number | 12.719.600 |
| Brand | SCUBAPRO |
| First Stage | MK19 EVO BT (Environmentally Sealed Diaphragm, Swivel Turret) |
| Second Stage | G260 Carbon BT (Adjustable Inhalation Effort, VIVA Switch, Carbon Fiber Front Cover) |
| Material | Black Tech-Coated Brass (First Stage), Carbon Fiber (Second Stage Cover) |
| Weight | Approximately 3 Pounds (Total System) |
| Hose Type | Super-Flow Hose |
| Connection Type | DIN |
9. Warranty Information
This SCUBAPRO regulator system is covered by a Limited Warranty. For specific terms, conditions, and duration of the warranty, please refer to the official SCUBAPRO website or consult an authorized SCUBAPRO dealer. Keep your proof of purchase for warranty claims.
10. Support & Contact
For technical assistance, spare parts, or professional servicing, please contact your nearest authorized SCUBAPRO dealer. You can find a list of authorized dealers on the official SCUBAPRO website.
SCUBAPRO Official Website: www.scubapro.com





