Matte Black Radiator Bleed Valve & Plug Cover Caps (Pair)

These matte black radiator plug cover caps are designed to fit over standard 24mm radiator blanking plugs and bleed valves. Suitable for heated towel rails and designer radiators, they conceal exposed brass or silver-finished fittings to create a clean, coordinated finish. Supplied as a pair, they effortlessly conceal raw components to give your towel rail a unified appearance.

Crafted from durable ABS plastic with a sleek, non-reflective matte black coating, these push-fit caps snap directly over standard radiator plugs. It is the small details that make a bathroom installation look complete—making these black cosmetic caps an ideal finishing touch for modern, industrial, or monochrome spaces.

Critical Fitment Guide: These caps have an inside diameter of 24mm. They are specifically designed to fit over standard 1/2" BSP radiator blanking plugs and bleed valves that measure approximately 24mm across their external edge. Please measure the outside diameter of your existing plugs before ordering to ensure a secure fit.

Key Features & Benefits

Seamless Monochrome Aesthetics: Completely conceals exposed radiator blanking plugs and air vent (bleed) valves for a clean appearance.
Sleek Matte Black Finish: Styled to complement modern matte black, silk black, and dark anthracite heated towel rails perfectly.
Tool-Free Installation: Simple push-fit design allows the caps to snap securely over your existing metal plugs in seconds—no tools or plumbing experience required.
Moisture Resistant: Made from high-quality ABS plastic engineered to easily withstand everyday bathroom moisture and humidity without cracking or peeling.

Technical Specifications & Exact Measurements

Specification	Measurement
Inside Diameter (Max Plug Size)	24mm
Outside Diameter	28mm
Inside Depth	6.60mm
Height (Outside)	8.60mm
Side Wall Thickness	2mm
Material	Durable ABS Plastic
Finish	Matte Black
Pack Quantity	1 x Pair (2 x Caps Included)

Important Compatibility Note: These are purely cosmetic covers and do not feature any sealing or venting properties on their own. They must be placed over an already functional, fully sealed blanking plug or bleed valve. Please note that these caps will not fit onto white plastic bleeding valves.

Why Choose Us?

Fast UK Dispatch: Orders are processed swiftly and dispatched directly from our dedicated facility to keep your bathroom installation on schedule.
Expert Support: We focus specifically on towel radiators and accessories, ensuring you get practical technical advice whenever you need it.
Premium Quality Guaranteed: Every accessory we source is built to strict standards, ensuring seamless compatibility and long-lasting durability.

Frequently Asked Questions

Q: Are these sold individually or as a pair?

A: Each pack contains two matte black cover caps, allowing you to cover both the blanking plug and bleed valve on a standard heated towel rail.

Q: Will these black cover caps fit my heated towel rail plugs?

A: These caps feature a 24mm inside diameter. They are designed to fit over standard metal blanking plugs and air vent bleed valves with an external diameter of approximately 24mm. We highly recommend measuring the outside width of your existing plugs before purchasing.

Q: Do these caps seal leaks or replace the radiator valves?

A: No. These are cosmetic cover caps designed purely for visual enhancement. They do not have sealing or venting functionalities and must be placed over an already functional, properly sealed blanking plug or bleed valve.

Q: Will these black caps match an anthracite radiator?

A: Yes, while they are a true matte black, they work excellently to contrast or blend with dark charcoal and anthracite towel rails, effectively hiding the bright silver or brass color of standard bleed valves.

Q: How do you install these radiator plug covers?

A: Installation takes seconds and requires no tools. They feature a straightforward push-fit design that snaps securely over your existing metal fittings.