Ideal Standard Idealux Isolating & Non-Return Valve — A961008NU
The Ideal Standard A961008NU is an authentic factory replacement combined isolating service valve and non-return (check) valve cartridge designed specifically for Idealux built-in shower mixers and associated thermostatic fittings. This integrated cartridge performs two critical system roles: it houses an internal non-return check valve to stop unequal-pressure backflow and hot/cold water cross-contamination, and features an integrated isolating screw mechanism to allow localized water shut-off directly at the valve body during servicing without turning off the property's main water supply.
Identification Guide:
MPN: A961008NU | Legacy Barcode / EAN: 5055639183902 | Brand: Ideal Standard / Armitage Shanks | Range: Idealux Concealed Shower Mixers | Function: In-Line Isolation & Backflow Prevention (NRV) | Material: DZR Brass & Engineering Polymer
Key Features
- Original Factory Component: Direct Ideal Standard replacement manufactured to precise mechanical tolerances for high-pressure sealing.
- Dual-Action Design: Combines an internal spring-loaded non-return valve with a manual screwdriver-operated isolation shut-off spindle.
- Prevents Cross-Contamination: Stops back-siphonage and cross-flow between unbalanced hot and cold supply pipes, ensuring WRAS compliance.
- Pre-Fitted O-Ring Seals: Supplied complete with factory rubber sealing rings to guarantee a watertight fit inside the mixer casting.
Installation & Compatibility Notes
Engineered for Ideal Standard and Armitage Shanks concealed shower bodies featuring the Idealux internal manifold system:
- Fitment Location: Screws directly into the cold and/or hot inlet ports inside the concealed mixer body behind the concealing faceplate.
- Service Tip: If your shower valve suffers from water crossing between hot and cold lines, or cold water pushing into the hot cylinder feed, the internal check valve within this cartridge requires replacement.
- Specification Check: Confirm your technical schematic specifies part number A961008NU or A961008 before ordering.