Wirquin Kayla Dual Flush Valve DVA0100 — The Simple, Reliable Fix for a Running or Faulty Toilet

If your toilet isn’t flushing properly, runs constantly, or needs a replacement internal mechanism, the Wirquin Kayla DVA0100 Dual Flush Valve is the trusted solution used by plumbers and homeowners alike across the UK. Straightforward to install, built to last, and backed by a 10-year manufacturer’s guarantee — this is a repair done once, done properly.

What Does It Do?

Inside every toilet cistern (the tank behind or above the toilet bowl) sits a flush valve — the mechanism that releases water when you press the button or lever. Over time these wear out, causing weak flushes, constant running water, or complete flush failure. The Kayla DVA0100 replaces that worn mechanism with a modern, water-efficient dual flush system — giving you separate full and partial flush options to save water on every visit.

Will It Fit My Toilet?

The Kayla valve is designed to fit the two most common cistern outlet sizes found in UK homes — 1½" and 2" — making it compatible with the vast majority of close-coupled, back-to-wall, and concealed cistern toilets, whether ceramic or plastic. If you’re unsure which size you need, simply measure the opening at the bottom of your cistern — this valve covers both.

It is supplied complete with a chrome flush button featuring a variable diameter of 16–38mm, meaning it will fit nearly any size of hole in your existing cistern lid without the need for an adaptor.

Why Choose the Wirquin Kayla?

• WRAS Approved — fully compliant with UK Water Regulations, so it’s safe, legal, and appropriate for use with the mains water supply in any UK property
• Tested to 200,000 flush cycles — that’s the equivalent of over 35 years of use for a typical family of four. Exceptional longevity, engineered in
• Adjustable flush volumes — set both the full flush and the half flush to suit your cistern capacity and personal preference, helping to reduce your household water consumption
• Cable-operated mechanism — a smooth, responsive flush action with no stiff or sticky buttons
• Durable thermoplastic construction — resistant to limescale build-up and the damp conditions inside a cistern
• 10-year manufacturer’s guarantee — complete peace of mind from a trusted French plumbing brand with over 60 years of expertise

Technical Specification

• Model: Wirquin Kayla DVA0100
• Compatible Outlet Sizes: 1½" & 2"
• Flush Type: Dual Flush (adjustable full & partial)
• Operation: Cable operated
• Valve Size: 105mm (±5mm)
• Button Diameter: 16–38mm variable
• Finish: Black valve with chrome button
• Material: Thermoplastic
• WRAS Approved: Yes
• Guarantee: 10 Years

What’s in the Box

• Wirquin Kayla DVA0100 dual flush valve
• Chrome flush button (16–38mm variable diameter)
• All fittings required for installation

Fast UK Delivery

In stock and dispatched within 1–2 working days — so a faulty flush doesn’t have to mean days of disruption.

The Wirquin Kayla DVA0100 — a straightforward solution to one of the most common household plumbing problems, built to last a generation.