SD-21/22-Twin Watermakers
High-Redundancy, High-Capacity Desalination for Super-Yachts and Mega-Yachts
SD21/22 Twin Range Watermakers
The SD21/22 Twin Watermaker offers unparalleled reliability with a duplex configuration designed for super-yachts, mega-yachts, and other high-demand marine applications.
This system integrates two complete, independent watermakers within a single skid, delivering the performance and redundancy needed to ensure an uninterrupted supply of fresh water at sea.
Built for Maximum Reliability and Flexibility
The SD21/22 Twin is engineered for flexible operation, allowing simultaneous or alternate use of each unit. This configuration provides true redundancy, ensuring that if one unit requires maintenance or encounters a fault, the other can continue producing water. Built with the same durability as the single SD21 and SD22 models, the SD21/22 Twin is ideal for vessels where reliability is critical.
Energy Efficient and Powerful
With a capacity range of 15 to 32 m³/day (when both units are in operation), the SD21/22 Twin delivers high-capacity water production with excellent energy efficiency, consuming approximately 20% less power than the installed capacity. Available in single-phase or three-phase power configurations, this unit adapts to various setups, making it suitable for both new installations and retrofit projects.
Comprehensive Documentation for Self-Maintenance
As with the SD series, the SD21/22 Twin comes with detailed documentation to support easy maintenance and troubleshooting. This feature enables crew members or technicians to perform maintenance independently, minimizing downtime and keeping the watermaker in optimal condition.
Support and Training
At UNDA, we provide responsive after-sales support for the SD21/22 Twin Watermaker, assisting clients with operational questions and maintenance needs. As an official dealer of SLCE Watermakers, we also direct clients to SLCE’s comprehensive training programs, ensuring users can maximize their equipment’s performance and longevity.
For more information on the SD21/22 Twin Watermaker or to download documentation, contact us today. Experience how the SD21/22 Twin, backed by SLCE quality and UNDA support, can meet your water purification needs for high-demand marine applications.
Premium, Proven Components
Each SD21/22 Twin unit is built with high-quality, proven components, selected for their reliability and durability in the maritime environment. Key features include:
- Dual feed pumps with strainers to filter debris and prevent damage
- Low-speed sand filters for optimal pre-filtration
- Dual filtration with 20µ and 5µ filters for cleaner, safer water
- Two high-pressure pumps and high rejection membranes for superior water quality
- Automatic flushing at low pressure and high flow to reduce fouling and extend membrane life
- In-place cleaning systems for simplified maintenance on both units
- Salinity control to monitor and regulate water quality for each unit independently
- Re-hardening filter to stabilize and improve final water quality
Flexible Options for Specific Needs
The SD21/22 Twin Watermaker can be customized with various options to enhance functionality and adapt to specific requirements:
- Second Stage: Adds capacity for producing industrial water alongside freshwater.
- Automatic Sand Filter: Self-cleaning filter with an automatic backwash cycle for ease of maintenance.
- Containerization: Available in 10, 20, or 40-foot containers for mobile or on-site installations.
- ATEX Certification: Optional “Atexisation” for safe operation in explosive environments.
- Pre-Treatments: Options like oil removal filters and dechlorination for challenging water sources.
- Post-Treatments: Additional options such as chlorination and UV sterilization to ensure safe, potable water.
Characteristics
Dimensions
The SD21/22 Twin is designed with a compact footprint, maximizing output while minimizing required space on board.
Explore Alternatives
If you’re looking for a single-unit solution, consider the SD11/21/22/23 Watermaker, ideal for medium tonnage vessels and smaller land applications. For a more economical alternative, the Soraya series offers reliable performance at a lower price point, though with a less rugged design than the SD series.
For more details or to find the perfect watermaker for your needs, explore our full range or contact us today.