New Off-Grid Toilet Showcased at OX SoCal
In short
CompoCloset showed the S1 Dry Flush at Overland Expo SoCal, where visitors saw the urine-diverting toilet in action and watched the first live install on-site. A backer's Cuddy, already fitted in a Momentum Vans build, was converted to an S1 with the S1 Adapter Kit, showing existing Cuddy and Cuddy Lite units can be upgraded without changing the layout.
From Kickstarter to Real-World Builds
Last year, the S1 dry flush funded in minutes on Kickstarter and moved into presale shortly after. While development has taken slightly longer than expected, deliveries are now scheduled to begin at the end of April.
From Concept to Reality at OX SoCal
Credit: Drive OVP - Video Link
At Overland Expo SoCal, the S1 moved from concept to real-world use. It was described at the event as “the most anticipated toilet in overlanding.”
Attendees were able to see the system in action. They gained a clear understanding of how the urine-diverting, sealing design works.
Feedback was immediate, with many noting how intuitive the system felt compared to existing options.
During the event, the first live install was completed on-site. A backer’s Cuddy Composting Toilet, already installed in a custom van from Momentum Vans, was converted into an S1 using the S1 Adapter Kit.
Why that matters:
- No redesign of layouts required
- Existing Cuddy and Cuddy Lite units can be upgraded
- Builders can offer multiple toilet options from a single footprint
What Makes S1 dry flush Different
The S1 Dry Flush separates liquids and seals only solid waste. This approach provides:
- More controlled waste handling
- Reduced plastic use compared to traditional dry flush systems
- No need for powders or chemical additives
- A more familiar, flush-style experience
A New Direction for RV Toilets
Historically, RV sanitation has centered around three main options:
- Black Tanks
- Composting Toilets
- Traditional Dry Flush Systems
What stood out at Overland Expo SoCal was growing interest in alternatives that reduce reliance on water, chemicals, and infrastructure.
See It in Action
Video from Overland Expo SoCal shows both the S1 in use and the first live install.
