Product overview
Details that help confirm the fit.
A size 3 pump from the Danfoss BFP 20/21 range, with clockwise rotation. The 21 in the name means it carries an integral solenoid cut-off valve, so no separate shut-off valve is needed in the nozzle line. The BFP 20 has no solenoid and does need one.
It supports one- or two-pipe operation; conversion is made with the documented bypass screw arrangement. The current Danfoss replacement is supplied for one-pipe operation. Rotation and outlet position are always read looking at the shaft end, so check that an R pump is what your burner turns.
The reference is printed on the pump housing. When you enquire, send the burner make and model from the rating plate, the fuel it runs on, and the boiler or heater it is fitted to. A photograph of the old part or the rating plate is usually enough for us to match it exactly and quote the same day.
Model, voltage, rotation, pressure range and mounting can vary. Final compatibility is confirmed against the nameplate or existing component.
