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About Cressi Ellipse Steel MC5 Regulator

The Ellipse uses an elliptical housing for the second-stage regulator which is made from hi-tech polymers. All the internal components of the Ellipse are a dependable high performance downstream valve design. Once the valve has open the air is channeled by injection to the liquid silicone mouthpiece creating a venturi-effect enhancing the performance. On the top of the housing there is a flow deviator that acts on the Venturi effect, with dive/pre-dive switch.

The Balanced 1st stage MC5 Hyper-balanced Diaphragm Actuated 1st stage has a lightweight body covered by a protective techno-polymer elastomer shell. The regulator is equipped with four low pressure and two high pressure ports. Internally the 1st stage is coated with an anti-friction anti-corrosion material that reduces resistance and allows the critical components to move freely. This makes the components perform and last longer between annual servicing and increases performance.

Research on internal air passages and incorporating a special assist chamber has lowered the drop of intermediate pressure upon inhalation and has kept this drop at a minimum, guaranteeing higher performance in any situation. Hyper-balancing allows for an increase of the intermediate pressure at maximum depths and when experiencing low pressure in the Scuba cylinder, offering higher performance at maximum depths and during the ascent phase of the dive.

Warranty Information

This product has a limited lifetime warranty.
(800) 338-9143

Cressi Ellipse Steel MC5 Regulator Features

  • 2nd Stage Features:
  • Ellipse Primary Second-Stage
  • Hi-Tech Polymer Housing
  • Liquid Silicone Mouthpiece
  • High Performance Design
  • Venturi Dive/Pre-Dive Switch
  • 1st Stage Features:
  • The MC5 first stage hyper-balanced diaphragm
  • 1 high pressure and 3 low pressure ports
  • Techno-polymer shell to protect its lightweight and compact body
  • Self-lubricating Internal coating
  • Anti-pressure drop pneumatics
  • Great travel regulator
  • Specifications:
  • - Supply pressure (INT connection) 0 to 3,400 psi (0-232 bar)
  • - Supply pressure (DIN connection) 0 to 3,000 psi or 4,350 psi (0-200 or 0-300 bar)
  • - Calibration pressure 145 psi (10 bars)
  • - Calibration adjustment range =/- 7 psi (+/- 0.5 bars)
  • - Air supply 4500 l/min (*)
  • - High Pressure Ports (HP) 1
  • - Low Pressure Ports (LP) 3
  • (*) values measured at LP port with second stage connected and 2,175 psi (150 bar) pressure in the tanks.

Cressi Ellipse Steel MC5 Regulator Specifications

1'St Stage Type
Lp Ports:
Hp Ports:
Adjustable 2'Nd Stage:
2'Nd Stage Type
Techno-Polymer Elastomer Shell.
Mfr #

Ellipse Steel MC5 Regulator Customer Reviews

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by PowerReviews
Cressi Ellipse Steel MC5 Regulator

(based on 1 review)

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(1 of 1 customers found this review helpful)


Top performer

By Islander

from Aguada, Puerto Rico

About Me Casual/ Recreational

Verified Reviewer


  • Adjustable
  • Comfortable
  • Effortless Breathing


    Best Uses

    • Extreme Depths
    • Warm Water

    Comments about Cressi Ellipse Steel MC5 Regulator:

    This regulator is excellent, light weigh, very easy to breathe and looks nice too...I've tested other regulators even more expensive ones and this one is just above anything you could found in it's price range and even can compete with some above it's price range...

    • Diving Type:
    • Cave Diving, Night Diving, Open Water Diving, Wreck Diving

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    Questions & Answers Powered by TurnTo®

    Questions about this item:

    Shopper  Is this reg compatible with EANx?
    LeisurePro S  Yes, this reg can handle nitrox mixes to 40%.
    Shopper  What is the difference between the MC5 black and MC5 steel?
    LeisurePro S  The MC5 steel simply has a steel cap that cuts down on wear and tear.
    Shopper  Does this come standard with the yoke 1st stage? Also does it come with a BCD inflator hose?
    LeisurePro S  Yes, this will come in the Yoke formation but does not come with a BCD inflator hose. Those LP hoses are usually sold separately or along with the BCD.
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