ScubaPro MK19 EVO DIN 300 1st Stage Regulator SCUBA Diving - REG434 DIN
The compact, lightweight ScubaPro MK19 EVO 1st Stage Regulator delivers consistent and seamless airflow, regardless of depth, tank pressure, or breathing rate. Its air-balanced diaphragm ensures greater performance with higher airflow and extended depth compared to similar products. Its swivel and dry chamber combination meets the requirements of even the most demanding tech divers. MK19 EVO is designed to be the ultimate first stage for cold water or contaminated diving conditions.
Features
- Environmentally sealed, preventing water and pollutants from entering the inner mechanism.
- Dry ambient pressure chamber that enhances freezing resistance while ensuring consistent airflow and maximum durability in the coldest conditions
- Swivel turret and five LP ports which maximize hose routing options.
- Built not only for professional, military and technical divers, but also for recreational divers.
- Superb cold water performance in a lightweight, small, compact size.
- Latest design makes it substantially smaller and lighter than the original MK19.
- New dry chamber is equipped with a double spring making it more compact and reliable.
What our Experts Think
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High-end cold-water first stage regulator, engineered for divers who need maximum reliability in demanding environments and deep dives.
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MK19 EVO sealed diaphragm design protects internal components from salt, sand, and freezing water, ensuring consistent performance in harsh conditions.
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Compact, lightweight body with excellent durability, making it ideal for travel, technical setups, and heavy-use recreational diving.
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Outstanding breathing stability, delivering smooth airflow regardless of depth, tank pressure, or high breathing demand.
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Optimized port layout (rotating turret + angled LP/HP ports) allows clean hose routing for streamlined and technical configurations.
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Factory-balanced performance for cold water (EN250A rated when paired with compatible second stages) ensures dependable airflow even in extreme conditions.
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A top choice for serious divers who want premium ScubaPro engineering with a focus on control, safety, and long-term durability.
Q&A
Q: What is the ScubaPro MK19 EVO DIN 300 First Stage Regulator (REG434)?
A: It is a compact, high-performance balanced diaphragm first stage designed for cold water, technical, and demanding diving conditions, delivering consistent airflow at all depths.
Q: Is the MK19 EVO suitable for cold water diving?
A: Yes. It is environmentally sealed with a dry chamber that prevents water, sand, and contaminants from entering, providing excellent freeze resistance and reliability in cold or harsh environments.
Q: What breathing performance does it offer?
A: Its balanced diaphragm design ensures stable, effortless airflow regardless of depth, tank pressure, or breathing rate, making it highly consistent underwater.
Q: How does the DIN 300 connection help?
A: The DIN 300 connection screws directly into the cylinder valve, offering a more secure, compact, and high-pressure-rated seal compared to yoke systems, ideal for technical diving.
Q: Does it support flexible hose routing?
A: Yes. It features a swivel turret and multiple low-pressure ports, allowing optimized and clean hose configurations for different diving setups.
Q: Who is this regulator best suited for?
A: It is ideal for advanced recreational, technical, wreck, and cold-water divers who need durability, precision airflow, and high reliability in challenging conditions.
Maintenance Tips
Damage 
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