15mm to 10mm Copper Radiator Valve Reducer – Microbore Adapter

15mm to 10mm Radiator Valve Reducers (Pair) – Microbore Pipe Adapter for Central Heating Systems

Convert 15mm radiator valves to accept 10mm microbore pipework quickly and securely. These 15mm to 10mm radiator valve reducers are designed for UK central heating systems where older 10mm microbore pipes need to be connected to modern 15mm radiator or towel rail valves without replacing pipework.

Ideal for heating upgrades, radiator replacements, and towel rail installations, these adapters provide a reliable compression connection between different pipe sizes, eliminating the need for costly system re-piping or structural disruption.

Key Features

• 15mm to 10mm pipe conversion: Designed specifically for connecting 10mm microbore pipe to standard 15mm radiator valves.
• Compatible with UK heating systems: Suitable for most 15mm compression radiator valves, including thermostatic (TRV) and manual valves.
• Durable brass and copper construction: Corrosion-resistant materials suitable for long-term use in central heating environments.
• Compression fitting design: Creates a secure mechanical seal when installed with standard compression olives.
• Suitable for copper and plastic pipe: Works with 10mm copper pipe and 10mm plastic barrier pipe (with pipe inserts).

Applications

These radiator valve reducers are commonly used in:

• Radiator replacements in homes with existing 10mm microbore pipework
• Towel rail installations and bathroom heating upgrades
• Heating system refurbishments without pipework replacement
• Converting older microbore systems to modern radiator valves

Technical Specifications

Installation Notes

These reducers install directly into a standard 15mm compression radiator valve using a compression olive. For plastic pipe installations, a suitable 10mm pipe insert must be used to ensure correct sealing and support.

A watertight seal is achieved through standard compression fitting methods. PTFE tape or jointing compound may be used where preferred by the installer.

Frequently Asked Questions

Q: Will these fit all 15mm radiator valves?
Yes. They are designed for standard UK 15mm compression radiator and towel rail valves, including both TRV and manual valves.

Q: Can I use them with 10mm plastic pipe?
Yes. They are compatible with 10mm plastic barrier pipe when used with a correct pipe insert.

Q: Do I need sealant or PTFE tape?
Not strictly. A compression fitting creates the seal, but PTFE tape or jointing compound may be used for additional security.

Q: Why use a reducer instead of replacing pipework?
They allow existing 10mm microbore pipe systems to connect to modern 15mm radiator valves without lifting floors, rerouting pipes, or performing full system reinstallation.