Tap Spreaders, Adapters and Extensions
Buy a tap spline adapter sleeve, tap handle extension or spline adapter to bridge the gap between different handle and valve configurations. We stock technical components and drive inserts for Armitage Shanks and Bristan fittings that allow for secure handle fitment on non-standard spindles. These parts solve compatibility issues without requiring a full tap replacement.
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Tap Spline Adapter Sleeves and Handle Extensions
Technical components for modifying valve spindles and handle fitments.
A tap spline adapter sleeve is required when a replacement handle does not match the tooth count or diameter of the original valve stem. These adapters act as a bridge, converting one spline pattern to another (such as 20 spline to 24 spline) to prevent the handle from spinning or wobbling. For deep-set valves often found in concealed installations or thicker worktops, a tap handle extension adds the necessary reach to the spindle, allowing the handle to sit flush against the shroud. We supply these specialist brass and plastic inserts to help homeowners and trade professionals repair specific branded taps where standard universal parts fail to align correctly.
Specialist Adapters and Spreaders for Tap Repairs
Common terminology for choosing the correct bridge component.
Questions About Tap Adapters and Extensions
Advice on measuring spline sizes and choosing the correct extension kit.
What is a tap spline adapter sleeve?
A spline adapter sleeve is a small metal or plastic part that slots over the valve spindle. Its purpose is to change the external spline count or diameter to match a new handle. It is the most common fix for a spinning handle where the internal teeth have stripped, provided the valve stem itself is still in good condition.
How do I measure for a tap handle extension?
Measure the gap between the top of the valve spindle and the point where the handle needs to sit. Extensions are usually defined by their spline count (e.g., 20 spline) and their overall length in millimetres. You must match the spline count on both the valve side and the handle side of the extension for it to work.
Can I use an adapter to fix a shower valve handle?
Yes, many thermostatic shower mixers use spline adapters to connect the temperature or flow levers to the cartridge. If your shower handle is slipping, check our shower valve spares for specific spline adapters designed for high-torque shower applications.
Are tap adapters and drive inserts universal?
No, these parts are highly specific to individual tap brands and models. A drive insert for an Armitage Shanks tap will not fit a Bristan valve, even if they look similar. You must count the splines and measure the diameter of the valve stem before selecting an adapter to ensure a flush, secure fit.
Why is my tap handle still wobbling after fitting an adapter?
A wobble usually indicates that either the spline count is a near-match but not exact (e.g., using a 20-spline part on an 18-spline stem) or the retaining screw is not long enough to reach the spindle. Ensure the adapter is fully seated and the screw is tightened firmly into the centre of the valve spindle.
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