Oceanic Alpha 8 + SP5 Dive Regulator Set
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Oceanic Alpha 8 + SP5 Dive Regulator Set - DIN is backordered and will ship as soon as it is back in stock.
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Product Information
The Oceanic Alpha 8 + SP5 Dive Regulator Set is an entry-level scuba regulator pairing the Alpha 8 demand valve second stage with the SP5 first stage, built for divers who want dependable breathing performance, easy maintenance, and a compact, lightweight package. It is available in DIN and Yoke connections and is designed to perform to U.S. Navy Class A standards at 198 feet.
Who it is for
This set suits divers who want dependable gear without a steep learning curve for maintenance, including those buying a first personal regulator or a reliable backup set. Nitrox compatibility to 40 percent means it works for both standard air dives and the recreational nitrox blends many divers use to extend bottom time. The low weight and slim front profile also make it an easy pack for travel.
Key details
- SP5 first stage: non-balanced flow-by piston design in marine-grade chromed brass
- Alpha 8 second stage: demand valve with a balancing system, orthodontic mouthpiece, and an integrated purge button
- Weight without hose: 6 ounces; front profile: 2.9 inches
- Minimum cracking effort: 1.1 CIW; factory set inhalation effort: 1.2 to 1.4 CIW
- Nitrox compatible to 40 percent
- Designed to perform to U.S. Navy Class A standards at 198 feet, with European CE compliance
- Covered by a Limited Lifetime warranty with a service agreement, plus a 30-Day Satisfaction Guarantee
Compatibility and sizing
The Oceanic Alpha 8 + SP5 set is offered in two connection types: DIN (SKU 40.3551.29) and Yoke (SKU 40.3520.29-PB1). Choose DIN if your tank valve is threaded for a DIN fitting or you dive technical configurations, and choose Yoke if your tank valve uses the standard A-clamp connection common across most recreational dive destinations.
DiveCatalog.com is an authorized Oceanic dealer and a dive shop in Irvine, California, operating since 2003. Call 888-701-4017 or start a chat if you need help confirming DIN versus Yoke fit or any other compatibility question before you order.
- Alpha 8 demand valve second stage built with a balancing system for the second stage.
- SP5 first stage uses a non-balanced flow-by piston design in marine-grade chromed brass.
- Integrated purge button on the second stage for straightforward, one-touch clearing.
- Orthodontic mouthpiece included for a more comfortable, secure bite.
- Nitrox compatible to 40 percent oxygen for standard recreational nitrox diving.
- Lightweight build at 6 ounces without hose, with a compact 2.9-inch front profile.
- Minimum cracking effort of 1.1 CIW, with a factory set inhalation effort of 1.2 to 1.4 CIW.
- Designed to perform to U.S. Navy Class A standards at 198 feet.
- Limited Lifetime warranty backed by a Limited Lifetime Service Agreement.
- 30-Day Satisfaction Guarantee included with purchase.
| Brand | Oceanic |
| Model | Alpha 8 second stage with SP5 first stage |
| First Stage | SP5 non-balanced flow-by piston, marine-grade chromed brass |
| Second Stage | Alpha 8 demand valve with balancing system |
| Purge | Integrated purge button |
| Mouthpiece | Orthodontic |
| Nitrox | Compatible to 40% |
| Weight (without hose) | 6 ounces |
| Front Profile | 2.9 inches |
| Minimum Cracking Effort | 1.1 CIW |
| Factory Set Inhalation Effort | 1.2 to 1.4 CIW |
| Standards | US Navy Class A at 198 ft; European CE |
| Warranty | Limited lifetime with service agreement |
| Connection Options | DIN, Yoke |
| SKU (DIN) | 40.3551.29 |
| SKU (Yoke) | 40.3520.29-PB1 |
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
How often does a scuba regulator need servicing?
Follow the interval in your regulator's manual, since manufacturers commonly specify an annual inspection or a set number of dives and many warranties depend on it. A regulator is life-support equipment, so service belongs with a factory-trained technician rather than being attempted at home. Have it looked at sooner than scheduled if you notice increased breathing effort, free-flow, bubbles, or water in the second stage.
How do I rinse and care for a regulator after diving?
Make sure the dust cap is dry and firmly seated over the first-stage inlet before the regulator goes anywhere near water, because water inside the first stage is the leading cause of internal corrosion. Rinse in fresh water without pressing the purge button, since purging while depressurized can draw water back into the second stage. Shake out the water and hang it to dry with the hoses in wide, gentle loops rather than tight bends.
Can I fly with a scuba regulator?
Regulators travel well and are usually best carried in hand luggage where they will not be crushed or lost. A regulator holds no gas of its own, so there is nothing inherently problematic about it on an aircraft, though the airline and security screeners always have the final say. Pack it dry with the dust cap in place, in a padded regulator bag or wrapped in soft gear.
Can I use my regulator with nitrox?
Many modern regulators are supplied as suitable for nitrox mixes up to 40 percent oxygen, which is the widely used recreational industry standard, while anything above that requires dedicated oxygen-clean equipment and procedures. Confirm what your specific regulator's manual states, and follow your nitrox training and your fill station's requirements. Never assume a regulator is oxygen-service clean simply because it looks clean or is new.
What is the difference between DIN and yoke regulators?
A yoke (A-clamp) fitting clamps over the tank valve and is the most common connection across much of the recreational world, while a DIN fitting screws into the valve and is standard in much of Europe and in technical diving. DIN captures the o-ring inside the threads, which many divers consider more secure, but yoke is often what rental cylinders provide. Adapters exist in both directions, so check what is used where you dive before deciding.
What is the octopus regulator for?
The octopus is your backup second stage, carried so you can share air with a buddy who is out of gas, or breathe from it yourself if your primary fails or free-flows. It is normally on a longer, brightly colored hose so it is easy to find and hand over under stress. Secure it in the triangle between your chin and the bottom of your rib cage so it is instantly accessible and not dragging through sand or coral.
How should I store a regulator between dive trips?
Store it fully dry, out of sunlight, with the dust cap in place and the hoses in wide loops rather than tightly coiled. Avoid hanging it by the second stages for long periods, which stresses the hose fittings; laying it flat in a padded bag or hanging it by the first stage is kinder. If it has sat unused for a long stretch, have it checked before your next trip rather than assuming it is ready to dive.
What does the balancing system on the Oceanic Alpha 8 second stage do?
The Alpha 8 second stage includes a balancing system, with a minimum cracking effort of 1.1 CIW and factory set inhalation effort of 1.2 to 1.4 CIW. This combination is meant to deliver smooth, dependable airflow across a range of diving conditions.
Is the Oceanic Alpha 8 + SP5 set a good choice for a new diver's first regulator?
Yes. It is positioned as an entry-level set with straightforward maintenance, a Limited Lifetime warranty, a Limited Lifetime Service Agreement, and a 30-Day Satisfaction Guarantee, making it a low-risk option for divers buying their first personal regulator.
Which SKU should I order for the Oceanic Alpha 8 + SP5, DIN or Yoke?
The DIN version is SKU 40.3551.29 and the Yoke version is SKU 40.3520.29-PB1. Order DIN if your tank valve has DIN threading, or Yoke if it uses the standard A-clamp connection; call 888-701-4017 if you are unsure which your tank uses.
What warranty coverage comes with the Oceanic Alpha 8 + SP5 regulator set?
It carries a Limited Lifetime warranty paired with a Limited Lifetime Service Agreement, plus a 30-Day Satisfaction Guarantee.













