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Originally comissioned by DC Marine, the A11 1st stage is manufactured by Yuhsin Systems, a beautifully designed Turret Style 1st stage with DLC black coating. It's reliable and environmentally sealed, so it is suitable for both warm and cold water diving. NB. The turret spins completely free from the DIN wheel, making this 1st stage uniquely suited for Sidemount aplications.
Service and Warranty
All Yuhsin regulators come with a 5-year free service parts guarantee confident in its quality.
Technical Specifications
| Connections | Yoke and DIN available (Yoke is a special request) |
| Type of first stage | Over-balanced diaphragm design, environmentally sealed |
| Body Type | two-piece machined body |
| Number of HP ports | 2 (7/16" UNF) |
| Number of MP ports | 5 (3/8" UNF) (5th port) |
| Environmental Dry Kit | Standard |
| First stage exterior | DLC Black coating over nickel electro-plated or PVD colour coating |
| Orientation | any |
| Coldwater Use | Yes EN250A 2-4C |