Cyklon First Stage Regulator

Poseidon
$469.00
$469.00

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Description

Cyklon First Stage Regulator by Poseidon

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A Legacy of Excellence

Introduced in 1958, the Poseidon Cyklon revolutionized the diving world by setting the standard as the very first regulator to feature a single hose with the demand valve situated at the mouth. Decades later, this legendary design continues to outperform modern competitors with ease. Thanks to its incredibly well-tested and robust construction, the Cyklon remains the first choice for elite military units—including the German Navy—as well as demanding technical and recreational divers who require absolute reliability underwater.

Balanced Diaphragm Protection

At the heart of this regulator is a highly reliable balanced diaphragm design. The diaphragm membrane seamlessly transmits ambient pressure changes to the internal valve without allowing surrounding water to enter the intricate mechanism. This effectively seals the critical internal components away from degrading environmental contaminants like salt, sand, and harsh pool chemicals. By preventing internal corrosion and mineral buildup, this design ensures consistent breathing performance and requires less maintenance than traditional piston-based first stages.

Rugged Cold-Water Performance

Built to survive the harshest underwater environments, the Cyklon First Stage is machined from durable, marine-grade chrome-plated brass. It is officially approved to the rigorous EN250 cold water standard, ensuring safe and reliable air delivery even in near-freezing conditions. The block is outfitted with four low-pressure (LP) and two high-pressure (HP) ports, providing excellent hose routing options for your specific diving configuration. It is available in your choice of standard Yoke or DIN connections.

Features
  • Historical Legacy: Based on the world's first single-hose regulator design introduced in 1958, trusted by military units worldwide.
  • Balanced Diaphragm: Protects the delicate internal mechanism from degrading salt, sand, silt, and chlorine.
  • Cold Water Ready: Officially approved to the EN250 standard for reliable performance in extreme cold-water environments.
  • Rugged Construction: Machined from highly corrosion-resistant, marine-grade chrome-plated brass.
  • Low Maintenance: The environmentally protected diaphragm design requires less maintenance than traditional open-piston first stages.
  • Optimal Routing: Equipped with standard 4 LP and 2 HP ports for versatile hose configurations.
Specs
  • Brand: Poseidon
  • Product: Cyklon First Stage Regulator
  • Design: Balanced Diaphragm
  • Material: Marine-grade chrome-plated brass
  • Valve Connection: Available in DIN or Yoke
  • Low-Pressure Ports: Four (4)
  • High-Pressure Ports: Two (2)
  • Gas Compatibility: Designed for standard Air use
  • Certifications: EN250 Cold Water Standard
Reviews
Product Q&A

Easy Returns

60-Day Hassle-Free Returns

Not the perfect fit? No problem. We offer a 100% credit or refund on any item returned within 60 days, as long as it's in new, unused condition with its original packaging. We want you to be happy with your gear, period.

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Your security is our top priority. We use the latest encryption technology to ensure your personal information is 100% safe, so you can shop with total peace of mind. Not comfortable ordering online? Give us a call at (815) 267-8400 and we'll gladly help you over the phone.

Full Manufacturer's Warranty

Authorized Retailer for Poseidon

We are an Authorized Dealer for every single brand we sell. This means you are getting 100% authentic gear, and your purchase is fully protected by the manufacturer's warranty. No gray-market gear, no warranty worries. We've got your back.

Our Promise to You

We\’re Divers, Just Like You

Our promise is that you get the right gear, and that it's right the first time. As divers ourselves, we'll help you find the perfect fit for your style of diving. Then, we'll quality-inspect your order before it ships to ensure it's ready for your next adventure. We're your local dive shop, no matter where you are.

California Proposition 65 Warning

Proposition 65

Safe Water and Toxic Enforcement Act of 1986 – Warnings Required

WARNING: This Dive Right In Scuba product can expose you to certain chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to  www.P65Warnings.ca.gov

We appreciate your decision to purchase Dive Right In Scuba products to provide the best in water experience. We take our job seriously! You may have noticed that our products now show a warning label at point of sale referring to carcinogens and birth defects. You may also have begun to see warnings related to carcinogenic substances or substances causing birth defects prominently displayed in hotel lobbies, hospitals, or other places of business recently. These warnings are required by the State of California, and we believe that an explanation of the California statute legislating the requirement will provide you valuable information regarding the relative risks of the chemicals that may be present in consumer products.

In 1986, the State of California passed the Safe Drinking Water and Toxic Enforcement Act; otherwise known as “Proposition 65” or "Prop 65". Prop 65 requires businesses like ours to disclose to individuals the presence of chemicals listed in the Act prior to point of sale. The regulations implementing this Act have been amended over time with the most recent updates will take effect on August 30, 2018. There are more than 900 chemicals on the Prop 65 Chemical List, including many chemicals that are found in components of a wide array of consumer goods or are used to manufacture components that make up consumer goods.

Prop 65 does not establish acceptable concentrations for any listed chemical; however, the agency which enforces it has established what is called "safe harbor" exposure levels for about one third of these chemicals below which warnings are not required. These "safe harbor" are established for listed carcinogens based on the quantity of the chemical that would result in one excess case of cancer in an exposed population of 100,000, assuming lifetime (70-year) exposure at the level in question. A similar process is used to establish safe harbor levels for listed reproductive toxicants. Additional information in plain language on safe harbor levels is available from the California Office of Environmental Health Hazard Assessment at http://oehha.ca.gov/Prop65/background/p65plain.html

At Dive Right In Scuba, the safety of your in water experience is our highest priority. We go to great effort to select materials that offer superior value, quality, and durability while also being generally recognized as safe and reliable for the full life of the product. Dive Right In Scuba also works closely with many regulatory bodies, such as the US Coast Guard and Underwriter’s Laboratories, to ensure the longevity of your on-water safety through targeted selection of durable, long lasting materials and components that undergo significant validation testing before being used to manufacture end items. Sometimes the safety promise we offer appears at odds with the health and safety requirements of other legislation in certain parts of the world when some regulations are updated ahead of others. To ensure compliance with applicable legal requirements, Dive Right In Scuba has placed a warning on products that contain a Prop 65 listed chemical, either directly or as a part of the raw material supply chain. This allows us to comply with California law and provide our California consumers with the disclosure required by Prop 65, while still promising the safest on water experience possible.

Dive Right In Scuba is working diligently with regulatory bodies and our own manufacturing partners to continue to continue to improve our product performance and reduce the presence of less desirable chemicals. Water is a precious resource we all share that is important to the health and well-being of our planet and all people. Our goal is to continue to enhance your water life experience while reducing our overall impact to the planet and, in particular, its waterways. While it is a bit of a juggling act to achieve, we are confident you will see continued improvement in both the immediate and long term future. We hope this explanation will enable you to understand why you will be seeing warnings on some our products.

Thank you for your continued use of Dive Right In Scuba products.
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