Description
This is a straightforward, trade-focused radiator valve pack: a chrome-finished thermostatic radiator valve head mounted on a reversible angled valve body, supplied with a matching lockshield and the small fittings you need to attach it to most domestic radiators. It gives simple, automatic temperature control at the radiator — the TRV head contains a liquid sensor that opens and shuts the valve to hold the room roughly at the chosen setting between the frost‑protection position and the highest stop.
The pack is aimed at household central‑heating systems where you want discrete, local control of a radiator (or towel rail) without changing the boiler controls. It’s a basic, robust component intended for installers and DIYers who need a reliable TRV and the matching lockshield in one box, plus tailpieces and olives for 15mm copper pipework.
Key specifications
- Temperature range: graded scale * (frost) to 5 — approximately 7°C to 28°C
- Connections: radiator tail 1/2″ BSP; pipework 15mm (reducers available separately)
- Construction: brass valve components with polished chrome finish
- Sensor: liquid‑filled thermostatic head
- Maximum working pressure: 10 bar; typical maximum flow temperature listed at 90°C
- Pack contents: TRV head (liquid sensor), angled reversible TRV body, matching chrome lockshield, two 1/2″ BSP tails, two 15mm olives, decorator caps
How it works and where it suits
The mechanism is the familiar one: the liquid sensor in the head reacts to room air temperature and moves the pin that controls flow through the valve. Turn the head towards higher numbers for a warmer room and back towards * for frost protection. Because the valve responds to local air temperature, the unit works best when mounted where the sensor sees the room temperature — not behind furniture, heavy curtains or directly in a draught.
The angled, fully reversible body is the practical element here. It can be fitted for flow or return installations and supports horizontal or vertical mounting, so it covers the common pipe layouts you meet when replacing valves on radiators and towel rails. That makes the pack a useful all‑round choice for general domestic work rather than a specialist valve for unusual or OEM radiator fittings.
Installation and compatibility notes
Out of the box the pack targets 15mm pipe and standard radiators with 1/2″ BSP tailpieces; two 15mm olives and two 1/2″ BSP tails are included so installation to copper pipe is straightforward for a competent DIYer or a heating engineer. If you have 10mm pipework, a reducer kit is available (sold separately) — check the retailer or the manufacturer for the correct part code before you buy.
Although the head is a common size and shape, smart radiator controllers or third‑party thermostatic heads don’t always fit every TRV body without an adapter. If you’re planning to swap to a smart TRV later, confirm the mechanical interface (pin length and fitting type) or buy an adapter specifically listed for the smart device.
The pack includes decorator caps so the TRV can be sealed temporarily if a radiator is removed for decorating, which saves partial draining in many routine situations. There is also a drain‑off version of the TRV pack if you need a lockshield that provides a drain point — consider that variant for installations where isolation and quick draining are useful.
Performance and practical points
The liquid sensor provides reasonably stable regulation and tends to be less jumpy than simple wax‑element heads. The temperature scale is the standard * to 5 layout installers expect, giving an easy visual reference rather than a precise degree readout; it’s suitable for domestic zoning (for example, keeping living rooms warmer than hallways) but it cannot replace a room thermostat as the primary control for a heating system.
Finish and build are aimed at the mass market: brass internals for durability and a polished chrome exterior to match modern radiators and towel rails. If you need a different finish there are alternative colourways (black, anthracite and corner/straight body shapes) within the same product family.
Who this pack is for
If you’re an installer fitting radiators in a standard UK home, refurbishing a bathroom towel rail, or simply replacing old manual valves with thermostatic control, this pack covers the common needs: reversibility, standard fittings, decorator caps and a matching lockshield. For specialist radiators with unusual connections, for projects requiring certified low‑leak drain points or for systems that must integrate with a particular smart‑valve ecosystem, check the exact tail and head compatibility before ordering.
