Ideal Standard Idealux Thermostatic Control Cartridge — A952538NU11
The Ideal Standard A952538NU11 is the authentic Idealux thermostatic control cartridge, precision-engineered for Armitage Shanks and Ideal Standard basin taps. This high-performance component is responsible for maintaining consistent water temperatures and ensuring user safety. As of 2025, this part has been discontinued by the manufacturer with no official alternative, making it a critical spare for maintaining legacy Idealux installations.
Identification Guide:
MPN: A952538NU11 | Range: Idealux / Armitage Shanks | Product Type: Thermostatic Cartridge | Status: Discontinued (No Replacement)
Key Features
- Exact Calibration: Factory-set to provide accurate temperature blending for basin applications.
- Genuine Quality: Ensures long-term reliability compared to generic third-party alternatives.
- Safety Integrated: Designed to prevent thermal shock by reacting instantly to pressure changes.
- Direct Fit: Specifically compatible with Armitage Shanks thermostatic basin mixers using the Idealux system.



