Description
These are a pair of manual corner radiator valves sold under Tower (TFC Group) with product code MRVC-B. They are simple, purpose-built shut-off/flow-control valves for hot‑water radiators where the pipework comes out of the wall (a corner installation). Supplied as a set of two, they provide the basic isolation and flow adjustment you expect from a manual valve rather than the automatic temperature control of a TRV.
Mechanically the MRVC‑B is intended for routine domestic and light commercial heating systems: the published limits are a maximum flow temperature of 120°C and a maximum working pressure of 10 bar, which covers standard central‑heating operation. Connections are the common sizes used across the UK radiator market — 15mm for the pipe and 1/2″ BSP for the radiator tailpiece — which makes them a straightforward match for most modern radiators and towel rails.
Key specifications
- Brand / manufacturer: Tower (TFC Group)
- Product code / model: MRVC‑B
- Pack: Set of 2 (pair of corner valves)
- Pipe size: 15mm
- Radiator thread size: 1/2″ BSP
- Maximum flow temperature: 120°C
- Maximum working pressure: 10 bar
- Finish: Black
- Type: Manual corner radiator valve (non‑thermostatic)
How these valves work and where they suit
Manual corner valves are the basic mechanical control on a radiator: turn the wheel or head to throttle flow, or close fully to isolate the radiator for removal or maintenance. The corner design places the inlet at a right angle to the radiator connection, so these valves tidy installations where the supply comes out of a wall close to the floor or behind the radiator. That layout keeps pipework neat and hides the run close to the wall face.
Because these are manual rather than thermostatic, they are best used where simple on/off or coarse flow control is acceptable — for example where room temperature is controlled centrally by the boiler or a separate room thermostat, or for a towel rail where fine, automatic temperature control is less important.
Compatibility and installation notes
The MRVC‑B uses the common 15mm compression‑style pipe connection and a 1/2″ BSP radiator thread, so it will generally replace like‑for‑like manual valves on most modern radiators and towel rails. Installers should check whether the radiator tailpiece supplied with the radiator matches directly or whether a short 1/2″ tailpiece is required. If you are replacing an existing valve, make sure the existing tailpiece/Olive arrangement is compatible before ordering.
Because the published specification does not state included accessories, confirm with the supplier whether olives, tailpieces or any small sealing parts are supplied in the box. If these parts are not included, you will need to fit the valve with correctly sized olives and tailpieces during installation.
Performance, durability and finish
The working limits given — 120°C and 10 bar — are well within what domestic and most commercial heating systems will see. The black finish is the product’s main styling feature; it is intended to match contemporary matt‑black radiators and plumbing fixtures. The manufacturer’s listing describes the finish as “black” but does not specify the coating method (for example powder coat, PVD or plated finish), so treat the black surface like any painted/plated plumbing finish: take care during installation to avoid scratching and use appropriate tools and cloths.
Practical cautions and what to check before buying
- If you require automatic room temperature control, choose TRVs rather than manual valves — these MRVC‑B units are manual.
- Confirm whether olives, compression nuts or radiator tailpieces are included with the pair before purchase; the listing does not explicitly state this.
- The manufacturer does not publish material composition or a stated warranty in the product listing; if either is important (for longevity in bathrooms, coastal locations, or commercial projects) check with the supplier.
- Fitters should protect the black finish during installation to avoid cosmetic damage.
In short, the MRVC‑B is a straightforward, economical pair of black manual corner radiator valves intended to tidy corner pipework and provide reliable on/off and flow control where thermostatic regulation is not required. They suit contemporary interiors that need a black valve to match modern radiators, but confirm the small installation details (included fittings, finish type, warranty) with the seller if you need that level of assurance.
