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The Complete Guide to Clack Water Softener Valves

by Mark Timmons & Zileni Milupi March 19, 2025 0 Comments

In the ever-evolving world of water treatment, be it industrial or residential, choosing the right equipment is essential to maintaining high-water quality. Water softening, as we have already covered in depth, is a crucial process that helps protect plumbing systems and appliances from the damaging effects of hard water. Clack Corporation’s innovative and effective water softener control valves make them stand out as one of the leading manufacturers in water softener technology. As we already know, water quality is a critical necessity of any industry or profession from real estate and healthcare to car washes. US Water Systems has recognized this need by providing an extensive line of water treatment equipment specially designed for a variety of applications.

One of the most important aspects is the proper matching of equipment to the intended use. Water softening equipment must be designed and sized according to its job. Therefore, factors such as tank sizes, capacities, and flow rates must be considered and carefully selected. As a leading manufacturer of commercial water softener control valves, Clack's valves are designed for a variety of applications, including residential, commercial, and industrial water treatment systems. Their control valves are known for their durability, efficiency, and user-friendly features.


The Clack Advantage: A Range of Solutions

Clack Corporation's product line provides a wide variety of solutions, each tailored to meet specific flow rate requirements and application needs. The key to success in water softening lies in selecting equipment that precisely matches its intended use, considering factors such as tank sizes, flow rates, and overall system capacity.

Advanced Features Across All Models

Every model features solid-state microprocessors with intuitive front panel controls, making system programming and adjustments straightforward for operators. The valves support both upflow and downflow regeneration processes, accommodating tanks from 6 to 63 inches in diameter, providing exceptional versatility for various installation requirements.

Model Details

Clack offers a comprehensive range of valves to match any commercial or industrial need:

CLACK VALVE WS1 1” Water Softener

Clack Corporation offers the Clack WS1 Control Valve in several models including WS1CS, WS1CI, WS1EE, WS1SD, WS1SP, WS1EI, and WS1TC. Most generally, the WS1 Standard Clack Control is the solution, but if you are unsure what you need, contact one of our Certified Water Specialists to be certain.

This system is available with 8% or 10% crosslinked resin and Pentair or Clack tanks as well as several different size brine tanks. The Clack WS1 Family of water softeners is very versatile and offers the following features:

  • Solid state microprocessor with easy access front panel settings.
  • Three modes of operation: meter immediate, meter delayed, or time clock delayed.
  • Double backwash feature offers optimum regeneration, cleaning ability, and efficiency.
  • Capable of 36 pre-programmed regeneration cycles based on control valve setting.
  • Days override feature; 1 – 28 days available.
  • Backwash and brining ability to 21” diameter tanks.
  • Downflow/upflow regeneration.
  • Stores system configuration and operation data in nonvolatile memory.
  • Coin Cell Lithium battery back-up with an 8-hour carry-over.
  • Level VI 15-volt output DC power supply provides safe and easy installation.
  • Control valve design provides optimum service and backwash rates.
  • Pre or Post treated water regenerate refill.
  • Reliable and proven DC drive.
  • One piece expanding seal spacer stack assembly.
  • Linearly reciprocating piston operation.

Options:

  • Backwash Filter
  • Bypass Valve
  • Weather Cover
  • Solar Operation

Compatible with the following typical concentrations of regenerates or chemicals:

  • Sodium chloride
  • Potassium chloride
  • Potassium permanganate
  • Sodium bisulfite
  • Chlorine and chloramine

BROCHURE: 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws3_valve_specsheets/2869_ws3.pdf 

CLACK VALVE WS1 Twin Alternating 1” Water Softener 

A black device with a screen on top of a black ball

Description automatically generated with medium confidence

Clack Corporation offers the Clack WS1 Twin Alternating Control Valve in several models, including WS1EE Twin, and WS1EI Twin. Most generally, the WS1CI Twin Standard Clack Control is the solution, but if you are unsure what you need contact one of our Certified Water Specialists to be certain. 

FEATURES: 

  • Service flow 106 lpm (6.36 m3/h) (28 gpm), backwash flow 57 lpm (3.40 m3/h) (15 gpm) with meter and bypass installed.
  • Solid state microprocessor with easy access front panel settings.
  • Four methods to initiate regeneration; meter immediate, meter delayed, time clock delayed or pressure differential.
  • Program in ppm, French degrees, German degrees, or cubic meters.
  • Fully programmable regeneration cycle sequence (maximum 9).
  • Programmable regeneration cycle times.
  • Days override feature; 1 – 28 days available.
  • Backwash and brining ability to 21" diameter tanks.
  • Downflow/upflow regeneration.
  • Stores system configuration and operation data in nonvolatile memory.
  • Coin Cell Lithium battery back-up with a 24 hour carry over.
  • Level VI 15-volt output DC power supply provides safe and easy installation.  
  • Control valve design provides optimum service and backwash rates.
  • Soft/treated water regeneration.
  • Pre or Post soft/treated water regenerate refill.
  • Low salt alarm.
  • 24-hour clock.
  • Reliable and proven DC drive.
  • One piece expanding seal spacer stack assembly. 
    Linearly reciprocating piston operation.

BROCHURES: 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws1_valve_specsheets/2572_ws1.pdf  

https://www.clackcorp.com/downloads/control_valve_specsheets/ws1_valve_specsheets/2983_ws1ee_twin_valve.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws1_valve_specsheets/2985_ws1ei_twin_valve.pdf 

CLACK VALVE WS1.25 - 1.25” Water Softener 

A black device with a digital display

Description automatically generated

Clack Corporation offers the Clack WS1.25 Control Valve in several models including; WS1.25 CS, WS1.25EE, WS1.25SD, WS1.25SP, WS1.25EI, WS1.25SQ, and WS1.25TQ. Most generally, the WS1.25CI Standard Clack Control is the solution, but if you are unsure what you need contact one of our Certified Water Specialists to be certain. 

Available with 8% or 10% crosslinked resin and Pentair or Clack tanks as well as several different size brine tanks, the Clack WS1.25 Family of water softeners is very versatile and offers the following features: 

Features: 

  • Solid state microprocessor with easy access front panel settings.
  • Four methods to initiate regeneration; meter immediate, meter delayed, time clock
  • delayed or pressure differential.
  • Program in ppm, French degrees, German degrees, or cubic meters.
  • Fully programmable regeneration cycle sequence (maximum 9).
  • Programmable regeneration cycle times.
  • Days override feature; 1 – 28 days available.
  • Backwash and brining ability to 21" diameter tanks Downflow regeneration.
  • Stores system configuration and operation data in nonvolatile memory.
  • Coin Cell Lithium battery back-up with a 24 hour carry over.
  • Level VI 15-volt output DC power supply provides safe and easy installation.
  • Patented one piece expanding seal spacer stack assembly.
  • Patented linearly reciprocating piston operation.
  • Control valve design provides optimum service and backwash rates.
  • Pre or Post treated water regenerate refill.
  • Mixing valve option available.
  • Low salt alarm.
  • 24-hour clock.
  • Reliable and proven DC drive.

Brochures:  

https://www.clackcorp.com/downloads/control_valve_specsheets/ws1.25_valve_specsheets/2611_ws1.25.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws1.25_valve_specsheets/2665_ws1.25cs.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws1.25_valve_specsheets/2867_ws1.25ee.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws1.25_valve_specsheets/2940_ws1.25sdsp.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws1.25_valve_specsheets/2620_ws1.25ei.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws1.25_valve_specsheets/2950_ws1.25sq.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws1.25_valve_specsheets/2664_ws1.25tc.pdf

 

CLACK VALVE WS1.5 1.5” Water Softener 

Clack Corporation offers the Clack WS1.5 Control Valve in several models, including WS1.5EE, WS1.5CI, WS1.5PEE, WS1.5PCI, WS1.5SD, WP-1.5SP, WS1.5REI, andWS-1.5SQ.  Most generally, the WS1.5CI Standard Clack Control is the solution, but if you are unsure what you need contact one of our Certified Water Specialists to be certain. 

Available with 8% or 10% crosslinked resin and Pentair or Clack tanks as well as several different size brine tanks, the Clack WS1.5 Family of water softeners is very versatile and offers the following features: 

  • 1.5" top mount control valve suited for mid-size commercial/industrial applications
  • Epoxy coated lead free brass valve body
  • Economical stainless steel optional meter assembly
  • Service flow rate of 265 lpm (15.9 m3/h) (70 gpm), backwash 197 lpm (11.8 m3/h) (52 gpm)
  • Solid state microprocessor with easy access front panel settings 
    Front panel display for time of day, days until next regeneration, volume remaining and current flow rate
  • Four methods to initiate the downflow regeneration; meter immediate, meter delayed, time clock delayed or pressure differential
  • Program in ppm, French degrees, German degrees, or cubic meters 
    Fully programmable regeneration cycle sequence (maximum 9)
  • Programmable regeneration cycle times
  • Days override feature; 1-28 days available
  • Level VI 15-volt output DC power supply provides safe and easy installation
  • Pre or Post treated water regenerant refill
  • Low salt alarm
  • 24 hour clock
  • Coin Cell Lithium battery back-up with a 24 hour carry over
  • One piece expanding seal spacer stack assembly.
  • Linearly reciprocating piston operation.
  • Reliable and proven DC drive.
  • Solar Power Option.

BROCHURES: 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws1.5_valve_specsheets/3176_ws1.5pee.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws1.5_valve_specsheets/3174_ws1.5pci.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws1.5_valve_specsheets/2608_ws1.5ee.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws1.5_valve_specsheets/2941_ws1.5sdsp.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws1.5_valve_specsheets/2667_ws1.5ci.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws1.5_valve_specsheets/2619_ws1.5ei.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws1.5_valve_specsheets/2951_ws1.5sq.pdf 

 CLACK VALVE WS2 - 2” Water Softener 

A black device with a digital display

Description automatically generated

Clack Corporation offers the Clack WS2 Control Valve in several models, including WS2CI, WS2EE, WS2SD, WS2SP, WS2 WS2.QC, WS2EL, AND OTHERS.   Most generally, the WS2CI Standard Clack Control is the solution, but if you are unsure what you need contact one of our Certified Water Specialists to be certain. 

Available with 8% or 10% crosslinked resin and Pentair or Clack tanks as well as several different size brine tanks, the Clack WS1.5 Family of water softeners is very versatile and offers the following features: 

  • 2” Top mount control valve suited for commercial/industrial applications. 
    Epoxy-coated lead-free brass valve body.
  • Economical stainless steel optional meter assembly.
  • Service flow rate of 435 lpm (26.1 m3/h) (115 gpm), backwash 303 lpm (18.2 m3/h) (80 gpm).
  • Solid state microprocessor with easy access front panel settings.
  • Front panel display for time of day, days until next regeneration, volume remaining and current flow rate.
  • Four methods to initiate regeneration; meter immediate, meter delayed, time clock delayed or pressure differential.
  • Program in ppm, French degrees, German degrees, or cubic meters.
  • Fully programmable regeneration cycle sequence (maximum 9).
  • Programmable regeneration cycle times.
  • Days override feature; 1-28 days available.
  • Coin Cell Lithium battery back-up with a 24-hour carryover. 
  • Level VI 15-volt output DC power supply provides safe and easy installation.
  • Pre or post-treated water regenerant refill.
  • 24-Hour Clock.
  • Reliable and proven DC drive.
  • One piece expanding seal spacer stack assembly.
  • Linearly reciprocating piston operation. 

BROCHURES: 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws2_valve_specsheets/2811_ws2ee.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws2_valve_specsheets/2828_ws2ci.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws2_valve_specsheets/2942_ws2sdsp.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws2_valve_specsheets/2864_ws2eeqc.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws2_valve_specsheets/2943_ws2spqc.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws2_valve_specsheets/2814_ws2ei.pdf  

https://www.clackcorp.com/downloads/control_valve_specsheets/ws2_valve_specsheets/2952_ws2sq.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws2_valve_specsheets/2861_ws2ciqc.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws2_valve_specsheets/2862_ws2eiqc.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws2_valve_specsheets/2953_ws2sqqc.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws2_valve_specsheets/2678_ws2h.pdf 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws2_valve_specsheets/3268_ws2hf.pdf 

CLACK VALVE WS3 - 3” Water Softener 

Clack Corporation offers the Clack WS3 Control Valve. If you are unsure of what you need, contact one of our Certified Water Specialists to be certain. 

Available with 8% or 10% crosslinked resin and Pentair or Clack tanks as well as several different size brine tanks, the Clack WS3 Family of water softeners is very versatile and offers the following features: 

  • Control Valve Flow Rates: Service 250 gpm (946 lpm) (56.8 m3/h) Backwash 220 gpm (833 lpm) (50.0 m3/h)
  • Epoxy coated lead free brass valve body.
  • Fully programmable regeneration cycle times and sequences (maximum 9).
  • Network up to 16 valves using Cat5 cable or better.
  • Methods to initiate regeneration: Meter Delayed, Meter Immediate, Time Clock Delay, Remote Input.
  • Add up to 2 relay expansion boards to circuit board (sold separately).
  • Top-mount or side-mount capabilities for commercial and industrial applications.
  • Programmable System types: Alternating, Progressive Flow, Series, Single. 
    Days override feature; 1-28 days or day/s of the week.
  • Blue backlight front display shows: Time and Date, Current Flow Rate, Volume Used, Volume Remaining, Days Remaining.
  • Diagnostics and history viewing.
  • Modbus RS485 duplex to communicate with building automation systems.
  • Remote circuit board software update capability.
  • Reliable and proven DC drive.
  • One piece expanding seal spacer stack assembly.

BROCHURE: 

https://www.clackcorp.com/downloads/control_valve_specsheets/ws3_valve_specsheets/2869_ws3.pdf 

What Sets Clack Valves Apart?

Built for Durability and Easy Maintenance

Clack's commitment to quality is evident in their choice of materials and construction methods. Using high-grade composite plastics and durable components, these valves are built to withstand the demands of continuous operation while minimizing maintenance requirements. Your water treatment system shouldn't give you sleepless nights. With Clack's proven reliability and easy-service design, you can be assured of a peace of mind. Get in touch with US Water certified experts to learn more about maintenance requirements and support options.

Advanced Technology

Every Clack valve incorporates modern microprocessor technology, making them both powerful and user-friendly. The intuitive front panels and comprehensive programming options ensure you can fine-tune your system to meet exact specifications. Why settle for a one-size-fits-all solution when you could have a plethora of choices? Reach out to discuss customization options for your system.

Scalable System Configurations

US Water Systems leverages Clack's versatile valve technology to offer water-softening solutions in various configurations. From single tank systems for standard applications to duplex, triplex, and quadraplex configurations handling flow rates from 25 GPM to over 1,000 GPM, there's a solution for every scale of operation. Contact our experts to explore the best configuration for your facility.

Reliability

Built with durability in mind, these valves use high-quality materials like composite plastics and epoxy-coated brass. This construction ensures long-term reliability and minimal maintenance requirements, crucial for commercial operations where downtime isn't an option. Want to avoid unexpected equipment failures? Speak with our specialists now to discover how Clack's reliable systems can safeguard your operations.

Versatility

Whether you need a simple single-tank system or a complex multi-tank configuration, Clack has you covered. Their valves support various system setups designed to match your specific operational needs, including:

  • Single tank operations - Suitable for standard applications where consistent water quality is essential
  • Twin alternating systems - Ideal for operations requiring uninterrupted soft water supply around the clock
  • Multiple tank configurations - Available in duplex, triplex, and quadraplex setups to handle flow rates from 25 GPM to over 1,000 GPM
  • Progressive flow systems - Automatically adjusts to varying demand levels, ensuring optimal efficiency and performance

Don't let inflexible systems limit your operations. Our water treatment experts can help you design a customized solution that perfectly matches your facility's unique requirements and grows with your needs. Contact US water systems today for a free system configuration consultation.

Easy Maintenance

All Clack valves are designed with serviceability in mind. Replaceable parts are easily accessible, and the straightforward maintenance procedures help minimize system downtime. With replaceable parts and simple servicing, you can reduce downtime and maintenance costs. Contact us today to find the perfect Clack system for your needs.

Making the Right Choice: How to Select the Best Clack Water Softener

Choosing the ideal water softening system is crucial to ensuring optimal performance and long-term efficiency. With so many options available, it's important to carefully evaluate key factors before making a decision. Here’s what you should consider when selecting the right Clack valve system for your needs:

1. Current and Projected Water Usage Requirements

Your water softener must be able to handle your current usage while also accommodating future growth. Whether you're managing a household, apartment complex, factory, or hospital, understanding peak water demand and daily consumption is critical for selecting a system with the right flow rate and capacity.

2. Available Space for Installation

The size of your installation space will determine which system fits best. Compact units are ideal for residential or small-scale applications, while larger commercial and industrial systems require more room. Be sure to measure your available space to ensure a seamless fit.

3. Specific Water Quality Challenges

Not all water sources have the same problems. Hard water contains minerals like calcium and magnesium, but some water sources may also have high iron, sediment, or chlorine levels. Testing your water composition will help you choose a system with the right features, such as additional filtration or specialized regeneration cycles.

4. Budget Considerations

Water softening systems are a long-term investment, and their cost goes beyond the initial purchase price. Consider both upfront costs and ongoing expenses, including salt, energy consumption, and maintenance. Clack’s range of water softeners includes options that balance affordability with performance.

5. Maintenance Capabilities

Ease of maintenance can make a significant difference in system longevity and efficiency. Clack systems are designed for easy servicing, with replaceable components and intuitive programming. Choosing a model that aligns with your maintenance capacity, whether you prefer self-maintenance or professional servicing, ensures smooth operation.

Why Clack?

Selecting the right Clack valve system can significantly elevate water quality, cut down maintenance costs, and increase the durability of appliances, plumbing, and other water-dependent equipment. With cutting-edge technology, personalized configurations, and durable construction, Clack offers efficient solutions for residential, commercial, and industrial applications. Not sure which system is right for you? Contact our experts today for a personalized recommendation.

Conclusion

Clack valves represent the crème de la crème of water softening control technology. Their combination of durability, advanced features, and reliable performance makes them an optimal choice for any commercial or industrial water treatment system. Whether you're upgrading an existing system or planning a new installation, considering a Clack valve could be one of the best decisions you make for your water treatment needs.

Remember, while choosing the right valve is crucial, proper sizing and system design are equally important. Consult with a certified water specialist to ensure your system is optimized for your specific requirements.


 

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