CRESSI SCUBA DIVING REGULATOR 1ST STAGE MC9 EHZ 820097VAR

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MC9 overcompensated 1st stage diaphragm, very modern but, at the same time, easy to maintain and very robust and reliable.

The body wall thicknesses have been optimized to minimize its weight (380 g). A semi-flexible elastomer sleeve protects the 1st stage from shock and erosion.

The HP seat is made of AISI316 stainless steel. In addition to the possibility of replacement in case of deterioration during 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 may enter coming from the bottle.

Polyurethane valve with high mechanical resistance, to oils and hyperoxic mixtures.

The hypercompensation of the mechanism ensures a slight increase in the intermediate pressure as the pressure in the bottle decreases. The regulator therefore provides its maximum level of performance in the final phase of the dive, undoubtedly 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 the pressure drop in forced breaths (0.5 bar) to a minimum, guaranteeing a use with high benefits in any situation.

The MC9 optionally has an isolation and anti-freeze kit SC (Sealed Chamber) that completely isolates the membrane and the spring from contact with water, making it ideal for operating in extremely low temperature conditions and with very dirty water.

Especially effective filter in the shape of a hat. Large effective filtration surface since the base and the entire side of the cylinder act with a 280 mm2 development surface. Inserted without the need for a circlip since it is blocked by the connection nut to the faucet.

2 HP and 4 LP outputs

Supplied in INT (bracket) and DIN 300 bar version. The thread of the DIN version is made of stainless steel instead of brass to ensure greater resistance in the event of drops or impacts.

Technical specifications:
High pressure outlets (HP) 2 - 7/16 ”Low pressure outlets (LP) 4 - 3/8”
System / compensation: overcompensated membrane Cap filter without circlip
Rotating turret: no
Supplied air flow 3000 l / min (*)
Intermediate pressure 9-10 bar Intermediate pressure drop (150 bar) 0.5-1 bar
External regulation LP: yes (Allen key)
Weight: Int. 615 g / DIN 480 g
Supply pressure (INT connection) 0-232 bar
Supply pressure (DIN connection) 0-300 bar
Set pressure 9.2-9.6 bar
Taring regulation scale +/- 0.5 bar

(*) Measurements carried out on an LP outlet with the second stage connected and a pressure of 150 bar in the bottle.