S960171AA Armitage Shanks Avon Valve /​ Metering Cap Self Closing Tap Cartridge (Ideal Standard)

Summary

Armitage Shanks S960171AA Avon and Avon 21 Self-Closing Metering Tap Cartridge

The Armitage Shanks S960171AA is a screw-fit, self-closing metering cartridge for the Avon and Avon 21 taps listed below. It is the internal timed shut-off mechanism, not the external push handle or chrome shroud.

The cartridge controls the timed water flow after the tap's push control is operated, allowing the tap to close automatically. The run time is adjusted at the tap, using the procedure for the particular model.

Technical Details

The thread measurement is an identification aid, not a confirmed thread standard or pitch. Match the exact tap model and existing cartridge before ordering; dimensions or markings alone do not establish fitment.

Confirmed Tap Models

• Armitage Shanks B0990AA Avon 21 self-closing wall-mounted bib tap
• Armitage Shanks B1055AA Avon 21 self-closing wall-mounted bib tap with warm-marked handle
• Armitage Shanks B8267AA Avon 21 self-closing basin pillar taps
• Armitage Shanks S7239AA Avon self-closing basin taps
• Armitage Shanks S7241AA Avon self-closing bib tap
• Armitage Shanks B0993AA Avon 21 self-closing basin mixer with flexible inlet hoses

For the additional B8267AA parts listing, see the B8267AA GEN1 component page.

Run Time and Adjustment

These are model-specific operating guidelines, not a fixed timing specification for the cartridge. On B8267AA and B0993AA, the adjustment key engages with the brass adjusting ring beneath the handle. Clockwise adjustment increases the run time, while anti-clockwise adjustment reduces it. Refit the handle temporarily and test the operation before securing it.

Fitting and Fault Checks

Isolate the water supply before removing the cartridge. Check for dirt or debris in the cartridge filter and pilot hole before deciding that a new cartridge is needed. Clean the valve seating area and follow the instructions for the exact tap when removing, lubricating and refitting the components.

• B8267AA servicing: The chrome shroud takes a 40mm A/F spanner, and the cartridge takes a 22mm A/F spanner
• B0993AA servicing: The chrome shroud takes a 41mm A/F spanner, and the cartridge is fitted within a removable brass housing

Troubleshooting

• Symptom: The tap continues running instead of closing / Likely Cause: Debris in the filter or an obstructed cartridge pilot hole / Solution: Isolate the supply, clean and check the mechanism following the tap's servicing instructions, then refit and test before replacing the cartridge
• Symptom: The tap shuts off too quickly or runs for too long / Likely Cause: The run-time setting needs adjustment / Solution: Adjust and retest using the procedure for the exact tap model

Related Spares You May Need

The following are separate service parts for the stated tap models. They are not all required for every S960171AA installation, so check the existing components and the relevant tap diagram before ordering.

• Armitage Shanks B960752NU Avon 21 hot and cold indicator pack, for B8267AA
• Ideal Standard B964695NU M5X8 DIN914 A2 screw, for B8267AA
• Ideal Standard B960602NU M38X1 metering-valve thread ring and adjustment key, for B8267AA and B0993AA
• Ideal Standard A923787AA Neoperl CASC.M24X1-B chrome aerator, for S7239AA
• Ideal Standard S960970NU 1/2 BSP brass flanged jamnut, for S7239AA
• Ideal Standard A961810NU seal kit, for B0993AA
• Ideal Standard A960611NU Avon mixer seal kit, for B0993AA
• Ideal Standard B960627AA CERAPLUS M50X1 chrome cap, for B0993AA
• GROHE GR-18007031 SYNTHESO LM 220 silicone grease, 2g, for lubricating cartridge O-rings during fitting

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