Ideal Standard 1/2" Ceramic Disc Valve (Cold Side) — A963004NU
The Ideal Standard A963004NU is an authentic OEM replacement 1/2" ceramic disc valve engineered specifically for the cold side of dual-control taps. Widely fitted across popular ranges including Natos, Swan, and select Sandringham mixers, this quarter-turn cartridge features diamond-hard ceramic sealing discs encased in solid brass to instantly eliminate drips, stop tap leaks, and restore smooth 90° lever operation.
Identification Guide:
MPN: A963004NU | Old Barcode: 5055639103344 | Side / Operation: Cold (Anti-Clockwise to Turn On) | Thread: 1/2" BSP | Spline: 20 Teeth
Key Features
- Precision Ceramic Discs: Eliminates washer degradation, dripping spouts, and stiff tap handles.
- Exact 20-Spline Head: Guarantees a solid, non-slip engagement with original Ideal Standard tap indices/levers.
- High-Grade DZR Brass Body: Maximum protection against internal limescale, dezincification, and corrosion.
- Quarter-Turn Action: Smooth 90-degree anti-clockwise rotation for effortless flow shut-off and control.
Compatibility & Handing Note
Confirmed Compatibility: Ideal Standard & Armitage Shanks Natos (Basin, Bath, and Bidet mixers), Swan (Pillar taps and mixers), Sandringham dual-control taps, and Silver series dual-control valves.
Handing Notice: This is the Cold Side valve (turns anti-clockwise to open). If your hot side is dripping or you are replacing both sides simultaneously, the matching Hot Side valve (clockwise to open) is part number A963003NU.