Knowledge Hub
We have written up the selection and decision questions we meet most often on site — in the language of practice, not of catalogues. Each guide answers a question that comes up in real projects.
How is control valve Kvs selected?
Selecting a control valve by pipe size is one of the most expensive habits in the trade. Correct selection starts with two values: design flow and the pressure drop to be allocated across the valve.
Learn more 5 min readValve actuator selection: force, stroke and signal
An actuator can render even a correctly selected valve useless. Compatibility is checked under six headings.
Learn more 6 min readWhat is hydronic balancing and why is it needed?
Most complaints that start with "the boiler is undersized" have nothing to do with the boiler. Water takes the path of least resistance; unless something tells it otherwise, it will not travel to the farthest circuit.
Learn more 7 min readBoiler room modernisation: a 12-point checklist
Renewing a boiler room is often assumed to mean "replacing the boiler". In fact most of the saving comes from the layers around it.
Learn more 5 min readFan coil control: thermostat selection in 2-pipe and 4-pipe systems
Fan coils are where comfort is most argued about in commercial buildings. Most complaints begin not in the unit but in the wrong thermostat choice.
Learn more 4 min readDamper actuator selection: torque, angle and fail-safe position
The first condition for saving energy in ventilation is that the damper actually closes — which comes down to torque selection.
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