SD-11/21/22/23 Watermakers

High-Capacity, Reliable Desalination for Medium Tonnage Vessels and Land Applications

SD11/21/22/23 Range Watermakers

The SD11/21/22/23 Watermaker series offers an excellent balance of capacity and footprint, designed to handle higher water demands for medium-tonnage vessels and land-based operations.

With capacities ranging from 5 to 40 m³/day, these units are ideal for tuna vessels, frigates, offshore service boats, yachts, hotels, and island bases that require a robust and dependable water supply.

Built for High-Performance Applications

Engineered for intensive use, the SD11/21/22/23 models are constructed with the same durability and quality as the smaller SD5, but offer greater output to meet larger demands. Manufactured in France and fully assembled on a sturdy frame, the SD11/21/22/23 units are modular, making them easy to install on existing ships or in confined onshore spaces. These watermakers are built to perform reliably in harsh conditions, making them ideal for both maritime and land applications.

Energy Efficient and High Capacity

With a capacity range of 5 to 40 m³/day, the SD11/21/22/23 series delivers high-capacity water production with exceptional energy efficiency, consuming around 20% less power than the installed capacity. Available in single-phase or three-phase power configurations, these units can adapt to a wide range of setups, providing flexibility for various applications.

Comprehensive Documentation for Self-Maintenance

Like the SD5, the SD11/21/22/23 series comes with detailed documentation, enabling crew members or technicians to perform maintenance independently. This feature minimizes operational downtime and allows for effective troubleshooting without external assistance, ensuring that the watermaker remains fully operational with minimal disruption.

Support and Training

At UNDA, as an official dealer of SLCE Watermakers, we provide responsive after-sales support for the SD11/21/22/23 watermakers, helping clients with operational questions and maintenance needs. Comprehensive training programs are available directly through SLCE, equipping users with the knowledge to maximize the performance and longevity of their equipment.

For more information on the SD11/21/22/23 Watermakers or to download documentation, contact us today. Experience how the SD11/21/22/23 series, backed by SLCE quality and UNDA support, can meet your water purification needs for marine or land-based applications.

Premium, Proven Components

Each model in the SD11/21/22/23 series is built with high-quality, proven components, selected for their reliability and durability in the maritime environment. Key features include:

Feed pump with strainer to filter debris and prevent damage
Low-speed sand filter for optimal pre-filtration
Dual filtration with 20µ and 5µ filters for cleaner, safer water
High-pressure pump 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 system for simplified maintenance
Salinity control to monitor and regulate water quality
Re-hardening filter to stabilize and improve the final product quality

Flexible Options for Specific Needs

The SD11/21/22/23 series can be customized with a variety of options to meet specific operational requirements:

Second Stage: Adds capacity for industrial water production 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 SD11/21/22/23 watermakers are designed with a compact footprint, maximizing efficiency while minimizing the space needed on board or on land.

SD-11/21/22

SD-23

Explore Alternatives

If you’re looking for a more compact model, consider the SD5 Watermaker, which is ideal for smaller vessels or land applications with modest water needs. For a more economical alternative, our Aruba series offers reliable performance at a lower price point, though with a less rugged design than the SD series.

For enhanced redundancy, explore the SD11/21 Twin models, which combine two independent watermakers within a single frame, ensuring continuous operation even in critical situations.

For more details or to find the right watermaker for your needs, explore our full range or contact us today.