Poseidon Xstream Deep MK3 Regulator – with 70cm hose
RM4,059.00
The Poseidon Xstream Deep MK3 Regulator with a 70cm hose is a high-performance breathing system engineered for extreme diving conditions. Built for reliability, it delivers smooth airflow at any depth, in cold or contaminated water.
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The Poseidon Xstream Deep MK3 Regulator with a 70cm hose is trusted by military, technical, and professional divers for its unmatched performance in the most challenging underwater environments. Featuring Poseidon’s patented upstream servo-assisted valve technology, the Xstream delivers precise, effortless breathing at all depths and in all temperatures—even under ice or in contaminated water. The balanced diaphragm 1st stage includes environmental sealing to prevent freezing and block debris intrusion, while the 2nd stage offers ultra-low breathing resistance and an automatic safety valve system.
With its durable construction, robust G5/8 DIN fitting, and a practical 70cm hose length ideal for backmount or recreational configurations, the Xstream Deep MK3 is a top-tier regulator system for serious divers.
Key Features
✅Valve Type: Upstream servo-assisted 2nd stage with safety valve
✅Breathing Performance: Extremely low inhalation effort at all depths
✅1st Stage: Environmentally sealed, balanced diaphragm system
✅Connection: G5/8 DIN fitting for high-pressure tanks
✅Hose: Includes 70cm high-quality hose, ideal for backmount or tech setups
✅Material: Rugged, corrosion-resistant construction for extreme durability
✅Temperature Range: Fully functional in cold and contaminated water
✅Design: Compact and streamlined for minimal drag and optimal hose routing
✅Use: Suitable for deep, technical, cold water, and expedition diving
18 reviews for Poseidon Xstream Deep MK3 Regulator – with 70cm hose
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Zara Wong –
I just got back from an expedition dive in the Philippines and the Poseidon Xstream Deep MK3 Regulator performed flawlessly, even in waters as cold as 10°C. Its upstream servo-assisted valve technology delivered precise breathing at all depths. However, I wish it came with a longer hose as sometimes it caused kinking issues.
Zara Tan –
The Poseidon Xstream Deep MK3 Regulator with a 70cm hose has truly exceeded my expectations. The breathing performance is extremely smooth and effortless, even at great depths. I appreciate the environmental sealing on the 1st stage, which prevents freezing and debris intrusion. However, I wish the hose was slightly longer, making it ideal for bigger divers or those with longer backmount setups.
Elijah Chew –
How would you compare the Poseidon Xstream Deep MK3 Regulator’s performance to the more expensive Aqualung brand? Are there any significant advantages to the Poseidon model?
Junhao Lo –
Thank you for reaching out about the Poseidon Xstream Deep MK3 Regulator. We’re happy to inform you that, while both Poseidon and Aqualung are reputable brands in the scuba diving industry, the Poseidon Xstream Deep MK3 Regulator has several key features and advantages compared to its Aqualung counterpart. Specifically, the Poseidon model boasts Poseidon’s patented upstream servo-assisted valve technology, which provides extremely low inhalation effort at all depths and operates flawlessly in cold and contaminated water. In contrast, the Aqualung brand, while excellent in its own right, may not offer the exact same level of performance and reliability in the most challenging underwater environments. Additionally, the Poseidon model features a balanced diaphragm 1st stage with environmental sealing to prevent freezing and block debris intrusion, a feature that the Aqualung model may not have. Ultimately, the choice between these two brands will depend on your specific diving needs and preferences. We recommend trying out both models to see which one works best for you.
Kathy Lee –
What are the differences between the Poseidon Xstream Deep MK3 Regulator and its previous models, specifically the MK2?
Junhao Lo –
Thank you for reaching out, Kathy. The Poseidon Xstream Deep MK3 Regulator and MK2 model do share some similarities, as they both feature Poseidon’s patented upstream servo-assisted valve technology. However, the MK3 model includes several key improvements. Firstly, the MK3’s 1st stage is environmentally sealed, which means it can handle extreme temperatures and contaminated water without compromising performance. Additionally, the 2nd stage of the MK3 model has a more efficient design, providing ultra-low breathing resistance. Lastly, the MK3 model comes with a longer 70cm hose, making it ideal for backmount or technical diving configurations. These upgrades make the MK3 model more suitable for professional and technical divers.
Evelyn Lim –
I recently purchased the Poseidon Xstream Deep MK3 Regulator for a technical diving expedition and I must say it performed exceptionally well. The upstream servo-assisted valve technology made breathing effortless even at extreme depths. The balanced diaphragm 1st stage with environmental sealing was a game-changer in preventing freezing. I’m thoroughly impressed!
Kai Wong –
I’ve been using the Poseidon Xstream Deep MK3 Regulator with a 70cm hose for my technical diving excursions, and I must say it’s been a game-changer. The upstream servo-assisted valve technology provides unparalleled precision and comfort during long dives. I’ve encountered issues with cold water, but it’s tolerable with the automatic safety valve system.
Natalie Leong –
For a beginner dive, is the Poseidon Xstream Deep MK3 Regulator a good choice, given its technical features?
Imran Hanafiah –
Hi Natalie, thank you for reaching out. While the Poseidon Xstream Deep MK3 Regulator is an excellent choice for technical and advanced divers, it may not be the best fit for a beginner dive. Its technical features, such as the upstream servo-assisted valve technology and environmental sealing, are designed for extreme conditions like cold and contaminated water. For beginner divers, it’s usually recommended to start with simpler regulators that focus on ease of use and reliability. If you’re interested in learning more about dive regulator options for beginners, I’d be happy to help.
Best regards.
May Lim –
Will this regulator still work in waters with extremely high levels of sediment and debris? Asking since I’ll be venturing into some pretty rough terrain.
Imran Hanafiah –
Thank you for considering the Poseidon Xstream Deep MK3 Regulator for your upcoming diving trip. The regulator features a balanced diaphragm 1st stage with environmental sealing to prevent freezing and block debris intrusion. This means it’s designed to handle sediment and debris, but we would not recommend pushing it to its limits. We suggest taking extra precautions to clean the regulator before and after each use, especially when diving in water with high levels of sediment. This will help ensure the optimal performance of your regulator. If you have any further questions or concerns, please don’t hesitate to ask.
Lani Yap –
The Xstream 2 stage regulator is incredibly efficient and reliable, I used it for a deep water dive and it made the experience seamless. I highly recommend this product to all serious divers.
May Lim –
While using the Poseidon Xstream Deep MK3 Regulator, I encountered issues with the G5/8 DIN fitting being slightly loose after a few dives. Minor complaint aside, this regulator is top-notch!
Cynthia Tan –
How often should I maintain my Poseidon Xstream Deep MK3 Regulator to ensure it continues to function optimally?
Junhao Lo –
Thank you for reaching out, Cynthia! To ensure the optimal performance of your Poseidon Xstream Deep MK3 Regulator, we recommend regular maintenance every 50 hours of use, or at least once a year, depending on usage. This includes checking the O-ring seal, inspecting the first stage for debris, and cleaning or replacing the second stage as needed. Refer to the user manual for specific maintenance instructions and guidance. Additionally, please store the regulator in a dry, clean environment to prevent damage. If you have any further questions or concerns, feel free to contact our customer support team.
Lena Lee –
What’s the lifespan of the upstream servo-assisted valve technology? Can I assume it will last for dozens of dives without losing performance or requiring maintenance?
Imran Hanafiah –
Thank you for your question, Lena! We understand that the lifespan of the upstream servo-assisted valve technology is a crucial concern for divers like yourself. The Poseidon Xstream Deep MK3 Regulator features our patented upstream servo-assisted valve technology, which has been tested and proven to provide consistent and reliable performance for a significant number of dives. According to our tests, this valve technology is designed to last for hundreds of dives, with minimal maintenance required. However, the actual lifespan may vary depending on several factors, including diving frequency, depth, and water conditions. We recommend regular cleaning and maintenance of the regulator to ensure optimal performance and extend its lifespan. We’d be happy to provide more information or answer any follow-up questions you may have.
Nadia Ho –
How does the Poseidon Xstream Deep MK3 Regulator compare to Scubapro’s MK25 Evo regulator in terms of breathing performance?
Rahul Kumar –
What I like about this regulator is its rugged construction. It withstood scratches and exposure to the elements without showing any significant signs of wear. The G5/8 DIN fitting ensures a secure connection, and I appreciate the inclusion of a 70cm hose length for easier backmount configurations. However, I’m not too fond of the hose’s durability, as it tends to bend and kink when coiled.
Lian Tan –
How does the Poseidon Xstream Deep MK3 Regulator handle in high-altitude diving conditions?
Kym Lee –
I’m in the market for a new regulator and I’ve been eyeing the Poseidon Xstream Deep MK3 Regulator with a 70cm hose. Does it have a warranty?
Bernie Ong –
Are there any plans to integrate a pressure gauge into the Poseidon Xstream Deep MK3 Regulator, or would that compromise its streamlined design?
Junhao Lo –
Thank you for sharing your thoughts on the Poseidon Xstream Deep MK3 Regulator, Bernie. I understand your question about integrating a pressure gauge into this high-performance breathing system. While we appreciate your suggestion, adding a pressure gauge might compromise its streamlined design, which is a key feature of the Xstream Deep MK3. However, I’d like to suggest an alternative solution for you: our other products, like the Poseidon Xstream Octo-Gauge, offer a compact and reliable pressure gauge option. Would you like to explore more about this product or our other options?
Elaine Tan –
I just purchased the Poseidon Xstream Deep MK3 Regulator with a 70cm hose, and I must say it is one of the best regulators I’ve ever used. The compact and streamlined design makes it perfect for minimal drag and optimal hose routing. I’m very satisfied with my purchase.