Armitage Shanks Avon Self-Closing Cartridge — A860372NU
The Armitage Shanks A860372NU is the authentic manufacturer replacement self-closing (non-concussive) push-button cartridge assembly. Designed specifically for commercial and public washroom environments, this time-flow cartridge regulates run time and automatic shut-off in the Avon and Avon 21 tap collections. If your push tap runs continuously, will not shut off, drips from the spout, or shuts off immediately upon pressing, replacing this internal mechanical cartridge restores proper shut-off timing and water management without needing to replace the complete tap body.
Identification Guide:
MPN: A860372NU | Old Barcode (EAN): 5055639103818 | Compatible Ranges: Avon & Avon 21 Basins | Operation: Non-Concussive / Timed Flow Self-Closing | Finish: NU (Neutral / Unfinished Functional Component)
Key Features
- Original OEM Part: Precision-engineered by Armitage Shanks / Ideal Standard to original factory hydraulic tolerances.
- Regulates Shut-Off Cycle: Direct cure for taps that remain stuck on, short-cycle, or fail to establish an airtight hydraulic seal.
- Heavy-Duty Commercial Design: Built to withstand high-frequency operation in schools, healthcare facilities, offices, and commercial washrooms.
- Cost-Effective Maintenance: Avoids the disruption and high cost of unbolting brassware or replumbing basin supply feeds.
Installation & Compatibility Advice
Direct factory fit for the following Armitage Shanks tap suites:
• B8263AA: Avon 21 self-closing 1 taphole basin mixer (no waste)
• S7316AA: Avon 1 taphole self-closing washbasin mixer
Installation Tip: Isolate the hot and cold water supplies before starting. Unscrew the top push cap and retaining collar to remove the old cartridge. Thoroughly flush any debris, grit, or limescale from the internal tap body cavity before seating the new A860372NU cartridge to ensure immediate smooth shut-off operation.



