Pump Selector

Each recommendation links to a product page. Product page (category and model ID). When Q/H performance data is available, the selector uses the model performance table（spec_models and returns the closest suitable reference model: at the selected flow Q, curve head must be at least the required head H; models are prioritized when duty flow Q is within the sampled range [qmin, qmax] . Only when no in-range model is available will extrapolation be used. Multi-point data is fitted as a Q-H curve; single-point data is checked against the listed Q/H values. Products with only model_codes are shown as reference models. Final selection is subject to technical review.