Clark commercial/industrial line of control valves with water softener system was also developed with direct input from customers and incorporate many of the features proven in the residential line of valves.
Clack’s WS1 Automatic valve is a state-of-the-art control head designed for residential and commercial applications requiring flow rates up to 27 GPM (6.1 m3/hr). It has a backwash abilitiy capable of servicing up to 22″ diameter tanks.
The valve acts as a primary center that directs and regulates all cycles of water softening or filtration. It can be set to perform downflow regeneration or simply backwash and rinse.
The valve comes in different program versions and is controlled by a solid state microprocessor with front panel setting and screen display.
The WS1 has 9 injector sizes to choose from for different draw rates.
All Clack valves incorporate patented* “stack technology” and feature state-of-the-art electronics and programming software.

• Fiber-reinforced polymer valve body for superior strength and durability, non-corrosive, and UV-resistant
• Continuous service flow rate of 21 GPM with a backwash of 17 GPM
• Backwash capability accommodates softener tanks up to 16″ and filter up to 16″ in diameter
• Fully adjustable 3- or 5-cycle control for efficient and reliable water treatment system
• Time-tested, hydraulically-balanced piston for service and regeneration
• Optical sensor for precision cycle positioning
• Soft water refill for a cleaner brine tank
• Designed with double backwash for reduced hardness leakage
• Diagnostics for historical valve performance
• Programming stored in memory and will not be lost due to power outages

• Simple mechanical design is easy to use
• Non-corrosive, UV-resistant, fiber-reinforced polymer valve body
• Injector/drain modules containing the brine valve, flow controls, and injector are removable from the valve’s exterior
• Ruggedly-built timer is designed with heavy-duty 3/8″ wide plastic gears
• 5600 controls are user-friendly and easily programmable
• Choice of 7- or 12- day clock or demand regeneration with a mechanical meter
• Economical – small annual power consumption; keeps the time and activates the piston/valve mechanics with a single motor
• Designed with double backwash
• Continuous service flow rate of 20 GPM with a backwash of 7 GPM