1st STAGE: DS4 DIN

Simplified hose routing by the placing of the ports, for twinset and stage System: Over-balanced diaphragm Cylinder fitting: DIN G5/8, 300 bar Anti-freeze protection: Yes Oxygen percentage: Up to 40% Low pressure (LP) ports: 4x 3/8 UNF High pressure (HP) ports: 1x 7/16 UNF Handwheel: DIN stainless steel Dust cap: DIN plastic

2nd STAGE: XTX40

Entry level Apeks regulator System: Pneumatically balanced valve with integrated venturi freeflow control system Material: Composite and bright chrome finish Cold water resistant: Yes Oxygen percentage: Up to 40% Breathing Resistance: Preset, dealer-adjustable Mouthpiece: Orthodontic and a non-toxic silver ion additive, which reduces viruses and other bacteria by 99% Low pressure hose: 70 cm, 3/8 UNF. Right or left hand hose configuration (set by factory right-handed Exhaust tee: Narrow, user changeable