Premium Brass Air Vent Caps & Internal Plugs (15mm & 22mm)

Keep your bathroom heating fixtures performing at their absolute peak with our Premium Brass Air Vent Caps and Internal Plugs. Designed to efficiently release trapped air from bathroom towel rails, heated drying racks, and standard bathroom radiators, these essential brass fittings ensure rapid, even heat distribution so your space remains consistently warm and comfortable.

Whether you are completing a new luxury bathroom installation or simply performing routine maintenance on a sluggish towel warmer, these precision-engineered vents provide a secure, leak-proof seal and effortless operation.

Key Plumbing Benefits

• Optimized Bathroom Heating: Quickly bleeds trapped air that causes cold spots at the top of your bathroom radiators and towel rails, restoring them to full heating efficiency.

• Heavy-Duty Brass Construction: Manufactured from high-quality, solid brass to resist corrosion and handle high-moisture bathroom environments without degrading.

• Leak-Proof Precision: Features expertly cut threads that guarantee a tight, secure fit into standard plumbing connections, preventing drips and pressure drops.

• Effortless Operation: Designed with an accessible, easy-to-turn bleed screw, allowing you to vent air quickly with a standard radiator key or flathead screwdriver.

Available Variations

Choose the specific cap or plug required for your bathroom fixtures from our dropdown menu:

• 15mm Air Vent Cap (WBS189): Standard external cap for 15mm connections, perfect for capping off lines while providing a venting option.

• 22mm Air Vent Cap (WBS190): A larger 22mm external cap offering robust venting capabilities for wider pipework.

• 15mm Internal Air Vent Plug (WBS191): Designed to sit flush inside a female thread, offering a neat, low-profile venting solution for modern towel rails and sleek radiators.

Product Specifications & Pricing