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Across Türkiye · 1–3 business daysProducts in stock ship free anywhere in Türkiye and arrive within 1–3 business days. Items not in stock are supplied to order — the lead time is confirmed to you when the order is approved.
Clack WS1 Valve Piston
₺3,186.20
VAT included · Free shipping in Türkiye
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Installation is a service · plumbing is the customer’s responsibility
Free Shipping
Across Türkiye
Fast Delivery
Across Türkiye · 1–3 business days
2-Year Warranty
Misuse is not covered.
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0850 304 95 25
- SKU
- WP-FV-008
- Category
- Water Treatment Spare Parts, Control Valves
Clack WS1 · Genuine Spare Part
Clack WS1 Valve Piston
The Clack WS1 Valve Piston is the main moving part inside the Clack WS1 control valve, travelling back and forth to direct water into the different regeneration stages; renewing the piston as it wears keeps the valve’s stage transitions accurate and its operation leak-free and stable.
- Compatibility
- Clack WS1
- Part
- Moving Piston
- Use
- Scheduled Maintenance
01Problem & Solution
A Worn Piston Upsets the Stages
Problem
Regeneration Is Not Running Properly
Over time the piston wears or becomes scored through friction against the O-rings and the effect of scale. Stage transitions then stop working cleanly, and internal leakage, a constant trickle to drain, pressure loss and incomplete regeneration follow.
Solution
Renew the Piston
The Clack WS1 Valve Piston restores accurate stage transitions by replacing the worn piston. It stops the leak, brings back pressure and regeneration efficiency, and has the valve running like new.
02Key Features
Exact Fit, Precise, Durable
The Clack WS1 Valve Piston is a precision part designed to keep the valve working accurately and steadily.
Clack WS1 Fit
A genuine-compatible piston made specifically for the Clack WS1 control valve, in exactly the right size and form.
Accurate Stage Transitions
Keeps the service, backwash, brine and rinse stages running in the correct sequence.
Precision Surface
Its smooth surface seals completely against the O-rings, preventing internal bypass and pressure loss.
Durable Material
Resistant to water and friction, it offers long-lasting and dependable operation.
Economical Maintenance
Renewing only the piston instead of the whole valve brings the cost down considerably.
Extends Valve Life
Piston maintenance carried out on time extends the life of the valve and of the whole softening system.
03Technical Specifications
Product Details
| Feature | Value | What it does |
|---|---|---|
| Product Type | Valve Piston (Spare Part) | The product family it belongs to. When buying a spare, the family alone is not enough; the size and model must match too. |
| Compatibility | Clack WS1 Valve | Which units and housings it works with. Compare it with yours before ordering. |
| Function | Stage Routing | What the product does to the water. |
| Movement | Back and Forth (Piston) | |
| Works Together With | O-Ring / Seal Assembly | The valve or unit models it fits. |
| Use | Periodic Maintenance / Repair |
04Applications
When Is It Used?
The Clack WS1 Valve Piston is used when servicing a WS1 valve, curing stage faults and repairing leaks.
- Periodic Valve Maintenance
- Curing Stage Faults
- A Constant Trickle to Drain
- Alongside the O-Ring Kit
- Softener Servicing
- Filter Unit Servicing
- Technical Service Maintenance
- Spare Parts Stock
05Replacement Steps
How Is the Clack WS1 Valve Piston Replaced?
Shut Off Water and Power
The water inlet and power are shut off, and the valve is put into bypass so the system is depressurised and safe.
Separate the Cover and Drive
The valve cover and drive assembly are separated to reach the chamber where the piston sits.
Withdraw the Old Piston
The worn piston is carefully drawn out and the bore and O-ring seats cleaned and inspected.
Fit the New Piston
The new piston is fitted, preferably along with new O-rings, using a suitable lubricant.
Reassembly and Testing
The cover and drive are refitted, the water turned back on and the valve tested through every regeneration stage and for leaks.
06Making the Right Choice
What Determines the Right Piston
When choosing the Clack WS1 Valve Piston, model and piston type compatibility must be assessed correctly.
Valve Model Compatibility
This piston is for the Clack WS1; make sure your valve is a WS1, as the piston differs on the WS1.25 and WS1.5.
Piston Type
Softener and filter valves may use different pistons; the piston must match the type of unit you have.
Condition of the O-Rings
Renewing the O-rings when the piston is changed is strongly recommended for a complete seal.
Genuine Parts
Using a compatible, good-quality piston matters for accurate stage transitions and valve life.
07Maintenance and Use
What to Watch For
- The piston surface must not be scratched; forcing it with hard tools during fitting can spoil the seal.
- Using a food-grade silicone lubricant during fitting helps the piston slide into place easily.
- When the piston is renewed together with the O-ring kit every time, sealing and efficiency hold up far longer.
- Because the job calls for command of the valve’s internals, it is best carried out by a technical service engineer.
08Frequently Asked Questions
Common Questions
What does the Clack WS1 Valve Piston do?
It is the main moving part inside the Clack WS1 valve, travelling back and forth to route water into the service, backwash, brine draw and rinse stages. It is the basis of accurate stage transitions and of the valve’s sealing.
How does it differ from the O-ring kit?
The O-rings are the fixed seals that provide sealing; the piston is the moving core that travels within them and directs the flow. The two work together and are usually renewed in the same service.
When should it be replaced?
It should be replaced when regeneration stages become irregular, water trickles constantly to drain, pressure is lost, or the piston surface shows clear wear or scoring. It can also be renewed with the O-ring kit during periodic maintenance.
Are the softener and filter pistons the same?
The softener and filter versions of the Clack WS1 valve may use different pistons. That is why it is important to confirm your unit’s type (softener or filter) and the valve model before ordering.
Can I fit it myself?
Users familiar with the valve’s internals can fit it; however, since incorrect assembly can cause stage faults or leaks, having the work done by a technical service engineer is recommended.
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Questions & Answers
Questions asked about this product
Questions on compatibility, capacity and installation are answered by our technical team. The answers stay public — so the next person with the same question can see them too.
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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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