Cressi AC2 Piston First Stage Dive Regulator The Cressi AC2 First Stage is a reliable and durable piston style regulator designed for recreational diving, dive centers, training environments, and heavy everyday use. Built with a straightforward unbalanced piston design, the AC2 delivers dependable airflow performance with minimal maintenance requirements, making it a trusted choice for beginner divers and professional dive operations alike. Known for its simplicity and long lasting reliability, the AC2 features an external Intermediate Pressure adjustment system that allows for easy servicing and precise tuning. Its corrosion resistant nickel plated brass body and stainless steel internal components provide dependable durability in demanding diving environments. Key Features Unbalanced piston first stage design Reliable and durable regulator construction External Intermediate Pressure direct adjustment system Easy maintenance and servicing design Corrosion resistant electroless nickel plated brass body High capacity conical filter system Long lasting AISI 316 stainless steel piston Stainless steel spring construction Compact and lightweight profile Ideal for recreational diving, training, and rental use Specifications First Stage Type: Piston Design AC2 HP Ports: 1 HP 7/16 UNF LP Ports: 4 LP 3/8 UNF Operating Pressure INT Version: 230 Bar Calibration Pressure: 9.8 to 10 Bar Material: Electroless Nickel Plated Brass Flow Rate: 2100 Litre Per Minute Weight Yoke Version: 635g Weight DIN Version: 480g The Cressi AC2 First Stage Regulator is an excellent choice for divers seeking dependable breathing performance, low maintenance reliability, and durable everyday functionality in an affordable regulator system. infinity 03