Cressi MC9-SC / Compact Pro Regulator
Size Chart
The MC9-SC/Compact Pro is designed to be used in cold water, making it versatile to be used anywhere on any trip. It combines a balanced diaphragm 1st stage with a Sealed Chamber (SC) cold water system and a light and compact second stage, which offers high performance in water with temperatures below 10° C | 50 F. The MC9-SC is the 1st stage with a super compensated membrane very modern but, at the same time, easy to maintain and very robust and reliable. The thickness of the body walls has been optimized to minimize its weight. A semi-flexible elastomer sheath protects the 1st stage from bumps and erosions. HP seat in AISI316 stainless steel. Apart from the possibility of replacement in case of deterioration when performing maintenance, the composition of the seat, much harder than the traditional brass of the fixed seats, prolongs its useful life since it better resists the deforming action of the metallic particles that can be introduced coming from the bottle. Polyurethane valve with high mechanical resistance, to oils and to hyperoxic mixtures. The hyper compensation of the mechanism guarantees a slight increase in the intermediate pressure as the pressure in the cylinder decreases. The regulator, therefore, provides its highest level of performance in the final phase of the dive, without a doubt the most critical. An advanced study of the internal air circulation and an exclusive distribution chamber that channels the air volume directly to the LP outlets have allowed pressure drop in forced breaths to a minimum level (0.5 BAR | 7.25 PSI), guaranteeing use with high benefits in any situation. The Seal Chamber is environmentally sealed, protecting it against icing in cold water and against contamination from particulate matter in silty conditions. Especially effective filter in the shape of a hat inserted without the need for a circlip. It features 2 High-Pressure and 4 Low-Pressure ports. INT version weight: 650 g | 22.9 oz. DIN version weight: 510 g | 18 oz. The thread of the DIN version has been made of stainless steel instead of brass to guarantee greater resistance in the event of falls or blows. In order to achieve extremely high performance in low-temperature environments, the Compact Pro 2nd stage, in particular, is designed with the special Thermoconductive Thermoplastic Neopolymer that has the capacity to transfer heat like metal while preserving the design flexibility, chemical resistance, and physical and mechanical properties of a conventional thermoplastic. That is, it makes it possible to drastically reduce the weight while delivering heat conductivity on a par with metal cases. Thanks to this material and a specially conceived safety valve, it can pass all the tests for use in cold water with flying colors. It is compact (6 cm | 2.4 in) and very light (153 g | 5.4 oz) that which makes it ideal for traveling. Service pressure: 232 BAR | 3365 PSI. Calibration pressure: 10 BAR | 145 PSI. Available in both INT and DIN version. Complete INT regulator weight: 943 g | 33.3 oz. Complete DIN regulator weight: 803 g | 28.3 oz.
1st Stage Technical Features
- Hyper-balanced 1st Stage
- Environmentally sealed Seal Chamber
- Light compact structure in chromium-plated brass with inner components in stainless steel, chromium-plated brass, and state-of-the-art thermoplastic resins
- High-capacity conical filter electroless nickel plated
- AISI 316 removable nozzle
- Anti-pressure drop pneumatic spring
- Semi-flexible elastomer body sheath for bumps and erosion protection
- 2 High-Pressure 7/16 UNF ports
- 4 Low-Pressure 3/8 UNF ports
- Service pressure (INT version): 232 BAR
- Calibration pressure: 10 BAR | 145 PSI
- DIN threaded connection EN ISO 1209
- INT/DIN connection complying with EN 250:2014 standard
2nd Stage Technical Features
- Downstream system
- Adjustable venturi effect
- Thermo conductive technopolymer body
- Big purge button
- Anti-scratch surface
- Bayonet-type cap holder with security lock
- Stainless steel cover
- Removable exhaust tee without tools
- Weight without hose: 153 g | 5.4 oz
Combination Performance
- Average Cracking effort 7.5 mBAR
- Average breathing effort 1.2 J/l
- Coldwater certification EN 250:2014
- Service pressure: 232 BAR | 3365 PSI
- Calibration pressure: 10 BAR | 145 PSI
- Complete INT regulator weight: 943 g | 33.3 oz
- Complete DIN regulator weight: 803 g | 28.3 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