Tusa Regulator + Octopus Package – RS-790 Regulator + SS-0001 Safe Second
Tusa Regulator + Octopus Package – RS-790 Regulator + SS-0001 Safe Second - Tusa RS-790 is backordered and will ship as soon as it is back in stock.
What's in this bundle
Tusa Regulator + Octopus Package – RS-790 Regulator + SS-0001 Safe Second - Tusa RS-790 is backordered and will ship as soon as it is back in stock.
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Product Information
This package pairs a Tusa regulator with the Tusa Safe Second SS-0001 octopus, giving you a complete first-stage, second-stage, and alternate-air setup in one purchase. Pick the regulator that fits how you dive: the RS-790, the RS-609U, or the RS1001, all from Tusa. The RS-790 option pairs a R-700 first stage with a Dry Ambient Pressure Chamber that keeps water off the diaphragm and spring, plus a ribbed top cap that acts like a radiator to help warm internal parts in cold water below 50°F/10°C. Its S-90 second stage is pneumatically balanced for smoother breathing, with a two-position Venturi lever so you can switch between a surface setting to cut down on free flow and a dive setting for full airflow, and airflow is helped along by two high-flow low-pressure ports on top of the standard LP and HP ports.
The Safe Second SS-0001 rounds out the bundle as your alternate air source. It's built with a lightweight, compact composite case and can be set up for either left- or right-hand use, so you can configure it to match your own gear habits. A Venturi adjustment lever gives you control over airflow, and the mouthpiece is ortho-consciously designed to sit comfortably during longer dives. It comes in a high-visibility yellow so a dive buddy can find it quickly if they ever need it.
Together, the regulator you choose and the SS-0001 octopus give you a matched Tusa setup built around reliable gas delivery and everyday comfort, whether you're diving warm reefs or working through colder conditions.
- R-700 First Stage with Dry Ambient Pressure Chamber, keeping water off the diaphragm and spring for steadier performance in cold water below 50°F/10°C (RS-790).
- Cold-Water Ready Design: ribbed top cap on the RS-790 increases heat transfer to help warm internal parts and reduce freezing risk.
- High Flow Ports: two high-flow LP ports plus two standard LP ports and two HP ports, positioned near the diaphragm to boost air flow by up to 15% (RS-790).
- S-90 Second Stage, pneumatically balanced for decreased inhalation resistance and smoother breathing across conditions (RS-790).
- Two-Position Venturi Lever on the regulator, letting you switch between surface/min and dive/max airflow settings.
- Lightweight Composite Octopus: the SS-0001's compact composite case supports versatile use across scuba setups.
- Left- or Right-Hand Configuration on the SS-0001 octopus for personalized comfort and easy rigging.
- Ortho-Consciously Designed Mouthpiece on the SS-0001 for comfortable, easy breathing during longer dives.
- Choice of Regulator Model: pick the Tusa RS-790, RS-609U, or RS1001 to pair with the included octopus at checkout.
- High-Visibility Octopus: the SS-0001's yellow color makes it easy for a buddy to spot as an alternate air source.
| Tusa RS-790 Dive Regulator Yoke | |
| Brand | TUSA |
| Model | RS-790 |
| First Stage | R-700 balanced diaphragm with dry ambient pressure chamber |
| Second Stage | S-90, pneumatically balanced |
| Connection | Yoke |
| HP Ports | 2 |
| LP Ports | 4 (2 high-flow, 2 standard) |
| Airflow | High-flow LP ports increase air flow by up to 15% |
| Venturi | Two-position adjustment lever |
| Cold Water | Suited to conditions below 50°F / 10°C; ribbed top cap for heat transfer |
| Color | Black |
| Tusa Safe Second SS-0001 High Performance Lightweight Octopus | |
| Brand | TUSA |
| Model | Safe Second SS-0001 |
| Product Type | Octopus / alternate air source |
| Case | Lightweight, compact composite |
| Orientation | Left- or right-hand configuration |
| Venturi | Adjustment lever |
| Mouthpiece | Ortho-consciously designed |
| Color | High-visibility yellow |
| Use | Alternate air source for air sharing |
- Tusa RS-790 Dive Regulator Yoke
- Tusa Safe Second SS-0001 High Performance Lightweight Octopus
Frequently Asked Questions
What is the Tusa RS-790 dive regulator?
The RS-790 is a yoke-connection scuba regulator pairing Tusa's R-700 first stage (a balanced-diaphragm design with a dry ambient pressure chamber) with the S-90 second stage, which is pneumatically balanced. In this bundle it's sold together with Tusa's SS-0001 Safe Second octopus as the alternate air source.
What are the specs of the Tusa RS-790 regulator?
The R-700 first stage uses a balanced diaphragm with a dry ambient pressure chamber, and has 2 HP ports plus 4 LP ports (2 high-flow, 2 standard). The S-90 second stage is pneumatically balanced with a two-position Venturi lever (surface/min and dive/max), the connection type is yoke, and it comes in black.
Is the Tusa RS-790 regulator good for cold water diving?
Tusa built the R-700 first stage's dry ambient pressure chamber and ribbed top cap specifically for cold water conditions below 50°F/10°C, keeping water off the diaphragm and spring and improving heat transfer to reduce freeze-up risk. The high-flow LP ports are rated to increase airflow by up to 15%, and the pneumatically balanced S-90 second stage is designed to reduce inhalation resistance.
What's included in the Tusa RS-790 + SS-0001 regulator package?
The bundle includes one Tusa RS-790 Dive Regulator Yoke (R-700 first stage plus S-90 second stage) and one Tusa Safe Second SS-0001 octopus, which can be configured for left- or right-hand use.
How fast is shipping and what's the returns policy on this bundle?
Orders over DiveCatalog's free-shipping threshold ship free with next-day delivery, and the product page shows the actual current delivery estimate for your order. Returns are handled under our standard DiveCatalog returns policy.
