Cressi 1st Stage MC9 SC DEMO

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1st STAGE MC9 SC
1st stage to overbalanced membrane MC9, the most modern but, at the same time, of simple maintenance and very robust and trustworthy.

The thicknesses of the walls of the body have been optimized to reduce to the minimum its weight (380 g). A case of semiflexible elastomer protects the 1st stage of blows and erosions.

Seat HP of stainless steel AISI316. Apart from the possibility of substitution in case of deterioration on having realized the maintenance, the composition of the seat, much harder than the traditional brass of the fixed seats, it prolongs its useful life since it resists better the deforming action of the metallic microparticles than could introduce proceeding from the bottle.

Valve of polyurethane of high mechanical resistance, to the oils and to the hiperoxic mixtures.

The hypercompensation of the mechanism guarantees a slight increase of the intermediate pressure as it gets down the pressure of the bottle. The regulator supplies therefore its maximum level of services in the final phase of the dip, undoubtedly the most critical.

An advanced study of the traffic of the air and a chamber of exclusive distribution that canalizes the air volume directly to the exits LP has allowed to reduce to minimal levels the fall of pressure in forced breathings (0,5 bar), guaranteeing a use with high services in any situation.

Isolation and antifreeze SC (Sealed Chamber) kit that isolates completely the diaphragm and the spring from water contact, turning it into the perfect option to work in extremely low temperature conditions because it reduces the possibility of freezing in extreme conditions.

Specially effective filter with form of hat inserted without need of circlip.
2 HP and 4 LP outputs.

They're supplied in version INT (stirrup) and DIN 300 bar. The toe of the coil of the version DIN has been realized in stainless steel instead of brass to guarantee a major resistance in case of falls or blows.


Technical characteristics:

High Pressure outputs(HP) 1 - 7/16 "
Low Pressure outputs (LP) 3 - 3/8 "
System / compensation: overbalanced membrane
Filter type hat without circlip
Gyratory turret: no
Kit anti-freezing: no
Flow of supplied air 2800 l/min (*)
Intermediate pressure 9-10 bar
Fallen intermediate pressure (150 bar) 0,5-0,8 bar
Exterior regulation LP: yes (key Allen)
Weight: Int. 525 g / DIN 375 g