Clack WS2CI Filter Timer Controlled Valve 2" V2CIBTZ-05

The Clack WS2CI Filter Timer Controlled Valve (V2CIBTZ-05) is a complete 2in commercial control head for backwashing media filters, and WrekinWater supplies it as a genuine replacement for larger installations — commercial premises, hospitality sites and high-flow domestic setups — running Clack WS2CI filter systems across the UK. As a timer-controlled valve it runs its backwash cycle on a fixed schedule, without the meter and brine draw stages a softener valve would need, making it purpose-built for carbon, iron, manganese and sediment filtration on larger systems.

Technical specifications

Symptoms that mean you need this part

• Flow rate through the filter has dropped significantly between scheduled backwashes
• The valve fails to complete a backwash cycle, or has stopped cycling on its programmed schedule
• Filtered water quality is deteriorating — discolouration, odour or particulate breakthrough
• The control head shows electrical faults, a dead display, or visible damage to the valve body

Why it fails / why it matters

On a commercial 2in valve like the WS2CI, the timer motor, circuit board and piston assembly are working against considerably higher flow rates and longer runtimes than a domestic valve, so the internal seals, drive components and electronics wear proportionally faster under sustained commercial use. Once the clock drifts, the piston sticks or the board fails, the filter stops backwashing correctly, which allows trapped media and debris to build up, flow to drop and filtered water quality to suffer — and at this size and cost, a full valve replacement is the standard fix rather than attempting a component-level repair.

Why buy this from WrekinWater

WrekinWater has served more than 50,000 customers over 15 years from its base in Bettisfield, Shropshire, and stocks genuine Pentair Fleck, Autotrol, Clack and Kinetico parts including this commercial WS2CI filter valve, so installers specifying larger systems can order the correct V2CIBTZ-05 assembly with confidence. As UK Company No. 11000488 and rated Excellent on Trustpilot, the team can advise on compatibility and lead times before you commit to a purchase of this scale.

How to fit it

1. Have a competent water treatment installer confirm the existing tank, riser and pipework are compatible with the replacement valve before ordering
2. Isolate the water supply and fully depressurise the filter system, placing it in bypass if fitted
3. Disconnect the drain line, inlet/outlet pipework and power supply from the existing 2in filter valve
4. Remove the old valve from the media tank, taking care with the riser tube on a commercial-size vessel
5. Fit the new V2CIBTZ-05 valve, ensuring the riser tube seats correctly and all threaded connections are properly aligned before tightening
6. Have the installer reconnect all pipework and power, then commission the valve — programming backwash time and frequency for the media type — with a full test cycle before returning the filter to service