Cressi AC5/Zen and Octopus Zen Regulator Set
Size Chart
"ZEN" is a state of calm attentiveness where actions are guided by intuition rather than conscious effort." This is our ZEN of diving—you become one with the water, calm, attentive, breathing in and out intuitively without effort.
This regulator offers an ultra-lightweight and compact design to minimize jaw strain even during long dives.
Paired with our AC5, a piston-controlled first stage, it represents simplicity, robustness, and reliability. Maintenance is straightforward, fast, and cost-effective thanks to an ergonomic design that allows quick disassembly
and reassembly without specialized tools, reducing downtime and maintenance costs.
The AC5/ZEN features an optimized design for maximum airflow and an extra-large conical filter for improved filtration in both DIN and INT versions. Enlarged water passage slots ensure efficient rinsing, providing smooth, clean functionality and a true ZEN state of mind.
TECHNICAL FEATURES 1ST STAGE
- New piston 1st stage with INT or DIN 300bar connection.
- 4 LP ports, 1 HP port for optimal hose orientation.
- Direct external IP calibration system for precise pressure adjustment.
- IP calibration value: 9.5-10 bar for consistent performance.
- New optimized 1st stage design for maximum flow.
- Conical filter for improved filtration in both versions.
- Single maintenance kit for both INT and DIN versions.
- Increased water passage slots for better pressure balance.
- Enlarged tool housing holes for easier servicing.
- CE EN250 certification pending for warm water use.
- Glossy finish with “Gun Metal” DIN wheel.
- Interchangeable parts with AC25 and AC2 models.
- Weight, INT version: 819 g • 1 lb 13 oz
- Weight, DIN version: 644 g • 1 lb 7 oz
TECHNICAL FEATURES 2ND STAGE
- Downstream system
- Adjustable Venturi effect
- Patented antifriction lever
- Dual-injection, enlarged purge button
- Radial pressure transmission openings
- Anti-scratch surface
- Bayonet-type cap holder with security lock
- Removable exhaust tee without tools
- Weight without hose: 149 g • 5 oz
Jacketed hose extremely light and flexible. Weight: 153 g • 5 oz
Shipping Policy
At Diving Gear, we strive to ship your order quickly, safely, and efficiently. Below is our complete shipping information.
Processing Times :
- In-stock items: Ship within 24 hours.
- Pre-orders: Ship within 3 business days.
- We ship Monday through Friday.
- Orders placed on weekends or holidays ship the next business day.
Shipping Method & Delivery Times
All orders are shipped Expedited via UPS and typically arrive within 5 business days across Canada.
If you need your order by a specific date, contact us or leave a note at checkout so we can confirm if we can meet your request.
Shipping Rates
- Free shipping on orders over $200 (Canada-wide).
- $35 flat rate on orders under $200.
Shipping Upgrades
If you need faster shipping, upgrades are available upon request. Additional postage fees apply. Please email or call us immediately after placing your order to arrange the upgrade.
Return Policy
At Diving Gear, your satisfaction matters. You may return your purchase within 30 days of the purchase date, subject to the conditions below.
If return conditions are not met, Diving Gear may refuse the return or apply a minimum 15% restocking fee.
Return Conditions
- Items must be returned in new, unused condition.
- Must be in original, unaltered packaging with intact PLU code.
- All packing materials, manuals, warranty cards, and accessories must be included.
- Products that have been used, damaged, or exposed to water/lube cannot be returned.
- Wetsuits that have been in contact with water or lube are not returnable.
- Diving Gear is not responsible for misuse, mishandling, or improper care.
- We are not responsible for personal items or data left inside returned products.
- We are not liable for incidental or consequential damage, including lost or stolen gear.
Missing or Damaged Items
Claims for missing items or shipping damage must be submitted within 7 business days of receiving your order.
Return Shipping Costs
- Customers are responsible for return shipping unless the return is due to our error.
- If the item is incorrect or defective, we will provide a prepaid return label.
- If the return is not our error, we can provide a label, and the cost will be deducted from your refund.
- Return-label pricing is different from standard outbound shipping rates.
How to Prepare Your Return
- Securely pack all items.
- Items must be returned in original/unused condition.
- If requesting an exchange, standard shipping charges apply unless you include a prepaid return label.
- Return-label pricing differs from standard outbound shipping fees.
Return Address
Please ship or drop off returns at: 2555 Tuohey Ave, Port Coquitlam, BC V3B 2E9
Final Sale & Non-Returnable Items
Special pre-order items or anything marked non-returnable cannot be returned or exchanged.
Refunds & Credits
Once your return is received and inspected, refunds are issued to the original payment method.
Please allow up to 10 business days for the refund to appear after we receive your return.
Contact for Returns
For returns, refunds, or exchanges:
Email: support@divinggear.ca
Return Address: 2555 Tuohey Ave, Port Coquitlam, BC V3B 2E9