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Frequently Asked Questions
What is a TRV valve and why should I use one?
A TRV (Thermostatic Radiator Valve) is a home radiator part that automatically controls room temperature, helping you save energy and reduce heating bills.
Do I need TRVs on all my radiators?
Yes, TRVs are recommended on most radiators except the room with the main thermostat.
What is the second, plain valve on my radiator?
That is the Lockshield Valve. It balances your heating system so all radiators warm up evenly.
Why is my radiator cold at the top?
It has trapped air. Use a radiator key to bleed the radiator and release the air.
Why won’t my radiator get hot even when the heating is on?
The pin inside your TRV may be stuck. Remove the valve head and gently free the pin.
How do I know if I need an Angled, Straight, or Corner valve?
Choose the valve type based on pipe direction: Angled for pipes from the floor, Straight for pipes from below, Corner for pipes from the wall.
I have very thin pipes; what is a reducer for?
A reducer connects 8mm or 10mm microbore pipes to standard 15mm radiator valves.
How can I hide ugly pipework for a neat finish?
Use Radiator Pipe Covers or sleeves to hide exposed pipe ends for a clean, modern look.
What is Central Heating Inhibitor used for?
It protects boilers and radiator parts by preventing rust and sludge buildup.
Does inhibitor clear sludge that is already built up?
No. If sludge is present, you need a power flush before adding inhibitor.
What is a Dual Fuel Kit for towel rails?
It adds an electric element so you can heat your towel rail in summer without turning on the full heating system.
What are radiator wall stays?
Wall stays are brackets that secure tall or heavy column radiators to the wall for safety.
What are Column Radiator Feet?
These support heavy radiators, reducing pressure on the wall and pipework.
How do I measure for a new radiator valve?
Measure the distance from the centre of one pipe to the centre of the other this is your pipe centre measurement.
What is PTFE tape used for on valves?
PTFE tape seals threaded valve connections and helps prevent small leaks.
Where can I find the radiator accessories price list?
All prices, sizes, and finishes for valves, pipe covers, and accessories are shown on the page.
What are the main parts of a radiator valve?
A valve includes the body, the control head or cap, and the internal spindle or pin.
Can I use a regular towel bar on my standard radiator?
Yes, magnetic or clip-on towel bars can be added to panel radiators without affecting heat output.
What does a house radiator parts diagram show?
It shows key components: inlet valve, lockshield valve, bleed valve, and connecting pipes.
What replacement parts for radiator valves are commonly available?
TRV heads, valve tails, extensions, and full valve replacement kits are widely available.