Patented cam tilt. One of the main reasons for initial inspiratory effort is friction between the cam and the diaphragm. XS Compact incorporates a new Cressi patent that reduces the friction coefficient from 0.2 to 0.001. The diaphragm's cam-disc friction is practically nonexistent thanks to the disc's polished Teflon covering and the cam's pivot system which works entirely perpendicularly. The body of the integrated 2nd stage incorporates metal particles to improve thermal conductivity and to prevent freezing in cold environments. Over-sized purge button, practically integrated: 400% greater than traditional ones and 80% greater than those of the Ellipse series. New air anti-expansion elements avoid direct contact with metal pieces, preventing freezing in cold environments. Thanks to this feature it has met CE Standardization for use in cold water (>4-degrees) EN250/2000.
The balanced 1st stage MC9 SC 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 3/8" threaded and two high 7/16" threaded 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. The balanced diaphragm, chrome plated marine brass first stage regulator is inherently environmentally sealed. The benefit of this type of first stage design is that none of the delicate internal parts are exposed to contaminants such as salt, sand, chlorine or pool acids. These environmental contaminants can cause corrosion and mineral deposits to form on the internal mechanism deteriorating regulator performance.The 1st stage MC9 - SC is identical to model MC9, but with a special seal chamber (SC) which completely isolates the diaphragm and spring from contact with water. Ideal for diving in waters that are rich in suspension and mineral salts, for archaeological work, for potholing and diving in cold waters.
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. Regulator weighs 33.26 oz (943g) with the hose and comes with an owner's manual. Regulator is Italian made and certified to EN250/2014 standards.