1st stage DB4+

This compact, ultra-rugged Stage 1 is the result of combining the time-tested DS4 platform with MTX technology. A robust dry chamber closure with a reinforced membrane helps prevent ice build-up while protecting the regulator from impact. A heat exchanger around the diaphragm increases the temperature of the breathing mixture inside the 1st stage. Classic shape is suitable for most configurations - single-bottle diving, twin-bottle diving, stage.

DB4+ has two high pressure outlets.

Features

• membrane balanced
• dry chamber sealed - reinforced diaphragm integrated in shockproof housing
• massive heat exchanger around the dry chamber and main membrane
• 4 x MP outlet 3/8" UNF
• 2 x HP outlet 7/16" UNF
• location of MP outlets: radial
• material: brass
• finish: satin chrome
• weight: 628 g
• DIN 300 bar, all-metal fitting
• EN250A