MC9 1St Stage Only is a compact Cressi DIN300 regulator first stage built for divers who want dependable air delivery, simple maintenance and lightweight performance. Its overbalanced diaphragm design helps support smooth, consistent breathing as depth and cylinder pressure change, while the protected body construction keeps the setup durable without unnecessary bulk. Practical and refined, the MC9 is a strong choice for compatible Cressi regulator builds and replacement first-stage configurations.
Overview
The MC9 1St Stage Only is designed for divers who want a compact diaphragm first stage with reliable breathing performance and straightforward servicing. Its optimised body construction helps reduce weight, while the diaphragm system delivers consistent air supply for recreational scuba setups.
Unlike the MC9-SC, this standard MC9 version does not focus on sealed-chamber protection, making it a practical option for divers wanting a lighter, simpler first stage for compatible regulator configurations.
Specifications
- Product type: Regulator first stage only
- Brand: Cressi
- First stage: Overbalanced diaphragm
- Connection: DIN300
- Ports: 2 HP ports and 4 LP ports
- Air delivery: 4500 l/min
- Reference: HZ820098
- Best for: Compact Cressi regulator builds and replacement setups
Features
- Product type: Regulator first stage only
- Brand: Cressi
- First stage: Overbalanced diaphragm
- Connection: DIN300
- Ports: 2 HP ports and 4 LP ports
- Air delivery: 4500 l/min
- Reference: HZ820098
- Best for: Compact Cressi regulator builds and replacement setups
Frequently Asked Questions
What is the MC9 1St Stage Only used for?
The MC9 1St Stage Only is used as the first stage in a compatible scuba regulator setup. It connects to the cylinder valve and supplies intermediate-pressure air to second stages and accessories.
What is the difference between the MC9 and MC9-SC?
The MC9 is the standard compact diaphragm first stage. The MC9-SC adds a sealed chamber system for extra environmental protection against water, silt and contamination.
Is this a complete regulator?
No. This product is the first stage only. It must be paired with compatible second stages, hoses and accessories to create a complete scuba regulator system.
What does DIN300 mean?
DIN300 means the first stage uses a secure threaded connection designed for compatible DIN cylinder valves rated up to 300 bar.
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