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The Yuhsin IVY first stage is a simple, balanced diaphragm 1st stage.
The IVY was first designed without an environmental seal (still available), but quickly upgraded with a top cap to protect it from the elements to meet popular demand.
The IVY is a clever little workhorse that can be upgraded with a 5th port, and a swivel. So if you want to make this a full sidemount compatible 1st stage down the road, just ship it back to us or your local service tech and get the upgrade fitted!
This regulator consistently has passed CE testing in France and is perfectly suited for pretty much any configuration you want to throw it at!
Kit Contents
Technical Specifications
| Connections | Yoke and DIN available |
| Type of first stage | Balanced Diaphragm |
| Body Type | One-piece forged body |
| Number of HP ports | 2 (7/16" UNF) |
| Number of MP ports | 4 (3/8" UNF) |
| Environmental Dry Kit | Installed |
| First stage exterior | PVD over Chrome |
| Orientation | any |
| Coldwater Use | Yes - 250A tested 2-4C |
| Type of second stage | n/a |
| Opening Effort Control Knob | n/a |
| Integrated Venturi Lever | n/a |
| Mouthpiece | n/a |
| Exhaust tee | n/a |
| Heat Exchanger for freezing resistance | n/a |
| Hose type | n/a |
| Nitrox compatible | Optional (green 5/8 DIN) |