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New Product
Clack WS1.5 EI Duplex Water Softener Valve 1.5"
₺349,050.80
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Installation is a service · plumbing is the customer’s responsibility
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Across Türkiye
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Across Türkiye · 1–3 business days
2-Year Warranty
Misuse is not covered.
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0850 304 95 25
- SKU
- WP-FV-024
- Category
- Control Valves, Water Treatment Spare Parts
Twin Alternating · WS15 · 12.3 m³/h
Continuous Service Across Two Tanks with the Clack WS1.5 EI Duplex Water Softener Valve
The Clack WS1.5 EI Duplex Water Softener Valve is Clack’s WS1.5 EI twin alternating control valve; it is also searched for as WS15, written without the dot. In a two-tank system, while one tank is in service supplying soft water, the other goes into regeneration or waits. It offers a 1.5 inch connection, a service flow rate of 12.3 m³ per hour at 1 bar pressure loss, and metered electronic control.
- Connection
- 1.5" QC
- Service Flow Rate
- 12.3 m³/h
- Tank Diameter
- 12"–24"
01Problem & Solution
Uninterrupted Soft Water at High Flow Rates
Problem
Hard Water or Downtime During Regeneration
When a single-tank softener goes into regeneration, it either supplies hard water through the bypass or the flow stops. In facilities that draw several cubic metres of water per hour, such as boiler rooms, process lines and large buildings, this gap can lead to limescale build-up or interruptions to production.
Solution
Twin Alternating Operation
The Clack WS1.5 EI Duplex Water Softener Valve brings the two tanks into service in turn: while one supplies soft water, the other goes into regeneration or waits on standby. Regeneration is carried out with softened water, and the flow of soft water to the installation is not interrupted during the switchover.
02Key Features
Flexible Programming, Composite Body
The Clack WS1.5 EI Duplex Water Softener Valve offers a flexible control structure for medium and large-scale softening systems.
4 Initiation Methods
Regeneration can be initiated by the meter immediately, by the meter delayed, by the clock delayed or by differential pressure.
Programming in Different Units
Settings can be entered in ppm, French degrees, German degrees or cubic metres; cycle times are programmable.
Built-In Meter
The meter in the side port of the valve body measures across a range of 0.95–216 litres per minute with ±5% accuracy.
Non-Volatile Memory and Battery Backup
System settings and operating data are stored in non-volatile memory; a lithium coin cell battery provides 8 hours of backup.
Regeneration with Soft Water
Regeneration is carried out with softened water; brine tank refill can be set to take place before or after regeneration.
Composite Valve Body
With its glass-fibre reinforced composite body, the valve can operate with down-flow and up-flow regeneration.
03Technical Specifications
Valve Specifications
| Feature | Value | What it does |
|---|---|---|
| Brand | Clack | The manufacturer. The valve and membrane brand decides how easily spares can be found. |
| Model | WS1.5 EI Twin Alternating (WS15) | The manufacturer’s model code. Spares and service are matched by this code. |
| Inlet and Outlet | 1.5" QC Fitting (Straight or 90°) | |
| Service Flow Rate | 12.3 m³/h (at 1 bar loss) | |
| Backwash Flow Rate | 4.9 m³/h (at 1.7 bar loss) | |
| Working Pressure | 1.4–8.6 bar | |
| Water Temperature | 4–43 °C | |
| Meter | ±5% · 0.95–216 L/min | |
| Mounting Base | 4"-8UN | |
| Drain Line | 1" Male Elbow | |
| Brine Line | 1/2" OD Poly Tubing | |
| Power Source | 100–240 VAC, 50/60 Hz · 15 VDC | |
| Softener Tank | 12"–24" | |
| Filter Tank | 12"–18" | |
| Number of Cycles | 6 | |
| Valve Body | Glass-Fibre Reinforced Composite |
04Applications
Where Is It Used?
The Clack WS1.5 EI Duplex Water Softener Valve is used as the control valve of two-tank softening systems in facilities that need soft water continuously at high flow rates.
Boiler Feed WaterSteam BoilersFactory Process WaterIndustrial LaundriesHotels and Large BuildingsCooling Water Make-UpHousing Estate Inlet Softening24/7 Production Lines
05How It Works
How Does the Clack WS1.5 EI Duplex Water Softener Valve Work?
Service
Hard water is softened as it passes down-flow through the resin bed of the tank in service and flows to the installation; the other tank waits on standby.
Regeneration Begins
When the meter has counted the set volume, or when the selected initiation method is triggered, the standby tank is brought into service and the exhausted tank goes into regeneration.
1st Backwash
The resin bed is loosened by water flowing in the reverse direction and the accumulated sediment is flushed to the drain; the time can be set from off to 120 minutes.
Brine Draw and Slow Rinse
The solution from the brine tank is passed slowly through the resin to regenerate it; the time can be set from off to 180 minutes.
2nd Backwash and Fast Rinse
The second backwash and the fast rinse flush out the remaining brine; both steps can be set from off to 120 minutes.
Brine Tank Refill and Standby
The brine tank is refilled before or after regeneration, depending on the selected setting; the regenerated tank waits on standby and the tanks continue to work alternately.
06Making the Right Choice
Which System Is the Clack WS1.5 EI Duplex Water Softener Valve Right For?
When choosing, the flow rate, tank diameter, pressure and plumbing should be assessed together.
Flow Rate
At 1 bar pressure loss the service flow rate is 12.3 m³ per hour. For smaller systems, the 1 inch Clack WS1 EI Twin Valve can be considered.
Tank Diameter
It is used with tanks of 12–24 inch diameter for softening and 12–18 inch diameter for filter applications; the mounting base has a 4″-8UN thread.
Pressure and Temperature
The working pressure should be within 1.4–8.6 bar and the water temperature within 4–43 °C; if the mains pressure is high, a pressure reducer is fitted ahead of the valve.
Plumbing and Electrics
Fittings and pipes between the tanks are supplied separately. The power supply is fed from 100–240 VAC, 50/60 Hz mains and delivers 15 VDC to the valve.
07Maintenance and Use
Checks for Reliable Operation
For the Clack WS1.5 EI Duplex Water Softener Valve to work efficiently, the salt, settings and plumbing should be checked regularly.
- Check the salt level in the brine tank regularly; sodium chloride or potassium chloride can be used as the regenerant.
- Set the day override between 1 and 28 days; even when consumption is low, the tanks are regenerated at this interval.
- Measure the hardness of the outlet water with a test kit at regular intervals; if the hardness is rising, review the hardness value and capacity settings.
- Use the valve in a place protected from frost and direct sunlight; plug the power supply into a dry, accessible socket.
- Filters, membranes, resin and salt are consumables; valves, pumps and tanks are durable spare parts.
08Frequently Asked Questions
Common Questions
What does the Clack WS1.5 EI Duplex Water Softener Valve do?
In a two-tank softening system it runs the tanks alternately. While one tank is in service supplying soft water, the other goes into regeneration or waits on standby; this way soft water reaches the facility even during regeneration.
Are WS15 and WS1.5 the same product?
Yes. WS15 is the Clack WS1.5 name written without the dot. The product on sale is the WS1.5 EI twin alternating control valve.
How is it different from the Clack WS1 EI Twin Valve?
The WS1 EI Twin has a 1 inch connection and is intended for smaller systems. The Clack WS1.5 EI Duplex Water Softener Valve, by contrast, with its 1.5 inch connection and a service flow rate of 12.3 m³ per hour at 1 bar loss, suits softener tanks of 12–24 inch diameter.
Are the connecting pipes and fittings included?
No. According to Clack’s technical data sheet, the connection fittings and pipework between the tanks are not supplied with the product; they are sourced separately during installation to suit the plumbing.
Are the settings lost if the power goes off?
No. The system settings and operating data of the Clack WS1.5 EI Duplex Water Softener Valve are stored in non-volatile memory, while a lithium coin cell battery provides 8 hours of backup.
Does the Clack WS1.5 EI Duplex Water Softener Valve come with a warranty?
Units, valves, pumps and tanks carry a 2-year warranty and taps a 1-year warranty. Filters, membranes, resin and salt are consumables and fall outside the warranty. Misuse is not covered by the warranty.
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Questions & Answers
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Installation
Installation is a service · plumbing is the customer’s responsibilityFitting the part falls under our service work and is subject to a service fee. Plumbing labour and any pipes, valves and fittings are not included in the price; these items are the customer’s responsibility.
Warranty
2 years · manufacturerThis product is covered by a 2-year manufacturer warranty. During the warranty period, labour and parts are free for faults arising from manufacture. Consumables such as filters, membranes and resin are outside warranty cover — they are replaced when their service life ends; they do not fail.
Withdrawal and returns
Distance sales agreementThe right of withdrawal and the return terms are set out in detail in the distance sales agreement. Systems that have been installed and commissioned, and made-to-order products, are outside its scope.
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