How to Replace a Kitchen Tap Cartridge (UK)
Swap a Bristan, Franke, Grohe or Reginox kitchen mixer cartridge. 35 mm, 40 mm and swivel-spout O-rings.
BristanFrankeGroheReginoxIdeal Standard
Diameter check
35 mm for most Bristan and Grohe kitchen taps; 40 mm for Franke Olympus, Filterflow, Reginox commercial style.
Fit
Isolate under sink. Undo lever grub screw with 2.5 mm hex. Cap unscrews. Cartridge retaining ring — 27 mm or 32 mm socket. Fit new cartridge, orientation dot to front.
Frequently asked questions
- Does a swivel-spout leak mean cartridge?
- No — swivel-spout base leak is the two spout O-rings. Order O-ring service kit, not full cartridge.
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