FRV Flow Regulating Valves
FRV Flow Regulating Valve in box
FRV Flow Regulating Valves
FRV Flow Regulating Valve with cap
FRV Flow Regulating Valve in box with flow chart
The smart way to quickly, accurately, and reliably balance radiators.
Balancing a heating system sounds like it should be straightforward, but in reality it's often frustrating, fiddly, time-consuming, and still far from precise. The Flow Regulating Valve (FRV) changes all that. Designed to take the pain out of radiator balancing, the FRV delivers a fast, effective, and consistent solution, without the guesswork.
Why Choose FRVs?
For easy balancing: fit the FRV in place of the lockshield valve on every radiator, use the provided lookup chart to set the correct flow rate, and instantly verify it with the clear visual indicator.
More comfort, less cost: whatever is powering the heating, properly balanced radiators mean no more overheating in some rooms and cold spots in others - you get even, reliable heat throughout the home.
Tip top performance: FRVs are ideal for modern heating systems like heat pumps, especially on open-loop and weather-compensated setups, yet will also help you get the best from a gas boiler (by helping to cool down the return the boiler can run efficiently because it's condensing properly) .
Flexible setup: want to keep your TRVs? No problem. The FRV only replaces the lockshield, so you can still use thermostatic valves where needed - for example, in rooms with unpredictable heat gains.
As seen & heard
FRVs in the wild
Don't just take our word for it - FRVs are reviewed, tested, and recommended by top heating experts.
Urban Plumbers
How a Simple Flow Valve Changes Everything
Syzmon using FRVs on a project to easily and accurately balance
Open Energy Monitor
The Future of Radiator Balancing
Glyn using FRVs on his own system to accurately balance
Aventus Eco
Nae Buffer?, Nae Problem!
FRVs on a microbore system, streamlined install with no buffer
MMPlumber
World's first flow setting radiator valve!
Matthew aka MMPlumber using FRVs to quickly balance - Youtube short - click on the image to watch
How it works:
- Fit each radiator with an FRV. For existing rads just swap the lockshield for an FRV.
- (Optional) Keep or add a TRV at the other end of the radiator.
- Use the chart to set the correct flow rate based on radiator location.
- Start with the radiators closest to the heat source and work outwards.
- Confirm flow visually, fit the protective covers, and the job's done.
Features:
- Flow range: 0-5 l/min
- When fully closed acts as an isolator
- Uni-directional - must be fitted on the return
- 10bar pressure rating
- Pressure drop likely in-line or slightly below that of a lockshield (see pdf for chart)
- Gives a good visual of water quality
- 15mm compression fitting
- Extra silicone o-ring seal for the rad connection
Where to buy FRVs
Available from these stockists
FRVs are stocked by specialist renewables merchants. Click to visit their website and place your order.
FRVs are not available to purchase directly from Firepower. Trade account holders may order as usual.
Fit. Set. Forget.
| Model | Weight | Diameter |
|---|---|---|
| FRV 15mm | 0.3kg | 15mm |
Downloads
Related
FRV Flow Rate Calculator
FRV - Flow rate calculator - easily create a schedule for what flow rates to set on the FRVs to every rad.
Undersized radiators are a bad idea for heat pump systems
When radiators are undersized, the system must work much harder to deliver the required heat, especially in low-temperature systems like heat pumps. This post explains why undersizing drives up flow rates and costs, and how correct radiator sizing combined with FRV valves ensures balanced, efficient performance.
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