Fleck vs. Clack: Which Water Softener Control Valve is Best?
Two names dominate the industry when selecting a commercial or industrial water softener control valve: Fleck and Clack. These brands are known for their reliability, efficiency, and advanced water softening technology. However, each has distinct features that suit different users and applications.
So, which one is the best for your specific needs? Let’s break down the features and benefits of Fleck vs Clack and explore how they differ from one another to help you make an informed decision.
Clack Control Valves
Founded in 1944, Clack is known for its cutting-edge technology and focus on precision. Their control valves are perfect for facilities that need a customizable, energy-efficient solution, with added focus on quiet operation for spaces where noise is a concern.
Benefits and Features of Clack Valves
Clack valves excel in providing advanced control and efficiency, making them an excellent choice for residential or smaller commercial setups. Their focus on precision and programmable options ensures that water softening is effective and tailored to specific needs.
Clack is a popular choice for commercial spaces that prioritize quiet operation, easy programmability, and energy efficiency.
- Advanced technology: Clack’s innovative systems allow for precise control and customization.
- Efficiency: They optimize water and salt usage, ensuring minimal waste.
- Quiet operation: Ideal for environments where noise levels must be kept low.
- User-friendly digital controls: Intuitive systems that make setup and adjustments simple.
Fleck Control Valves
Fleck valves have a long history in the water treatment industry, known for their tough, durable construction and high reliability. They are favored for larger systems, especially in commercial and industrial water softening systems, due to their simplicity and reliable, long-lasting design.
Benefits and Features of Fleck Valves
Fleck valves are designed for those needing a system they can count on daily without much hassle. They stand out for their high-performance standards and minimal maintenance requirements.
- Proven durability: Fleck valves are built to last in demanding environments.
- Wide range of options: From simple systems to advanced models, Fleck has a solution for every need.
- User-friendly design: Simple interfaces make them easy to operate, even in larger systems.
- Efficient regeneration: Fleck technology ensures cost-effective water and salt usage while maintaining excellent softening results.
Comparing Fleck vs Clack
Let’s break down the most popular Clack and Fleck control valves, Clack’s WS1 and the Fleck 5600 SXT, by flow rate, capacity, regeneration, efficiency, ease of installation and maintenance, and pricing and availability for a better look.
Flow Rate & Capacity
| Feature | Clack WS1 | Fleck 5600 SXT |
| Max Flow Rate | 27 GPM | 20 GPM |
| Capacity | 24,000 – 80,000 grains | 24,000 – 80,000 grains |
| Drain Line Flow Control | Adjustable (up to 7 GPM) | Fixed (5 GPM) |
Verdict: Clack WS1 offers a higher flow rate, which can benefit larger households and some commercial applications, while Fleck still delivers reliable performance in a wide range of system sizes.
Regeneration & Efficiency
| Feature | Clack WS1 | Fleck 5600 SXT |
| Regeneration Type | Metered (Demand-Initiated) | Metered (Demand-Initiated) |
| Cycle Time | 80-100 minutes | 90-120 minutes |
| Salt Efficiency | High (Customizable) | High (Customizable) |
| Programmable Cycles | Up to 9 | Up to 5 |
Verdict: Clack has more customizable cycles and a slightly shorter regeneration time, giving it a slight edge in efficiency.
Installation & Maintenance
| Feature | Clack WS1 | Fleck 5600 SXT |
| Installation | Easy (DIY-friendly) | Moderate (may require professional help) |
| Servicing | Tool-free maintenance | Requires basic tools for disassembly |
| Controller Complexity | Simple and intuitive | More complex programming |
Verdict: Clack is easier to install and maintain, while Fleck offers more customization but requires a learning curve.
Pricing & Availability
| Feature | Clack WS1 | Fleck 5600 SXT |
| Starting Price | $959 | $799 |
| Availability | Limited (dealer-only) | Widely available online & in stores |
| Warranty | 5 years (control head), 10 years (resin tank) | 5 years (control head), 10 years (resin tank) |
Verdict: Fleck tends to be more widely available online, often at a lower starting price, while Clack’s dealer model provides added support and ensures professional-grade installation and service.
Why Robert B. Hill Co. Offers Both Fleck and Clack Valves
At Robert B. Hill Co., we understand that there’s no one-size-fits-all solution in water treatment. That’s why we proudly offer both Fleck and Clack control valves: two of the most trusted names in the industry. Each has unique strengths, and we help our customers choose the right valve based on their specific application, infrastructure, and long-term maintenance goals.
When We Recommend Fleck
Fleck control valves are known for their rugged durability, wide availability, and exceptional performance in commercial and industrial systems. Their modular design and extensive product line make them ideal for:
- Facilities with high flow demands
- Large-scale commercial and industrial softeners
- Customers seeking long-term, proven reliability
- Systems that require easily accessible parts and support
We especially rely on Fleck’s brass-body models like the Fleck 2850, 3150, and 9000 series for heavy-duty applications. Their XT and XTR controllers offer advanced customization for operations that need to fine-tune regeneration and efficiency.
Check out these complete lists of our Fleck control valves:
When We Recommend Clack
Clack valves are a great fit for clients who prioritize quiet performance, energy efficiency, and intuitive controls. We often recommend Clack when:
- The system is in a space where noise matters (e.g., retail, office buildings)
- Precision and programmability are key
- The client already has Clack-based infrastructure and wants seamless upgrades
- DIY-friendly installation and maintenance is a plus
Clack’s WS1 series is particularly popular in mid-size commercial setups, thanks to its balance of performance and ease of use.
Final Verdict: Fleck vs Clack
Both Fleck and Clack are high-performing, dependable options for water softener control valves. The right choice comes down to your system’s requirements, your environment, and what kind of long-term serviceability you need.
- Clack valves shine in applications where quiet operation, energy efficiency, and intuitive controls are essential. They are a smart fit for offices, retail spaces, and residential systems where ease of use and low operational noise are priorities.
- Fleck valves are a reliable choice for demanding applications that require a heavy-duty, scalable solution—especially in commercial and industrial settings with high flow rates. Their broad product line and wide availability make them well-suited for both new installations and retrofits.
At Robert B. Hill Co., we help you assess your unique setup so we can recommend the best fit, whether that’s Fleck, Clack, or a fully custom solution.
Need help selecting the right valve for your system? Contact us today! We’ll help you build it right the first time.
FAQs About Fleck and Clack Water Softener Control Valves
1. How long do Fleck and Clack control valves typically last?
Both Fleck and Clack valves are known for their durability. With proper maintenance, Fleck valves can last up to 20 years or more, while Clack valves generally have a similar lifespan, depending on the model and usage.
2. Are Fleck and Clack valves compatible with all types of water softeners?
Yes, both Fleck and Clack control valves are compatible with most water softeners. However, it’s essential to match the valve size and type to the specific model of your system to ensure optimal performance.
3. What kind of maintenance do Fleck and Clack valves require?
Both Fleck and Clack valves are low-maintenance systems. Regular tasks typically include checking the salt levels, inspecting the valve for wear and tear, and ensuring the system is properly cleaned and sanitized. Specific maintenance requirements may vary depending on the model and environment.
4. Can Fleck and Clack valves be repaired or do they need to be replaced?
Both Fleck and Clack valves are repairable, with common replacement parts such as seals, pistons, and gears readily available. In many cases, simple repairs can be done rather than full replacements, helping to extend the lifespan of the valve.
5. What factors should I consider when choosing a control valve?
When selecting a control valve, consider factors like system compatibility, ease of use, availability of replacement parts, installation preferences, and support resources. It’s also helpful to think about the long-term maintenance needs and how the valve fits into your overall water treatment setup.
