Condensate and heat recovery systems > Mechanical pumps
MFP14 condensate pump
MFP14 is a Spirax Sarco automatic condensate pump with a ductile iron body that uses steam or compressed air to lift condensate and other liquids where ordinary trap drainage is limited by backpressure, vacuum or low differential pressure.
Quick facts
MFP14 condensate pump is the model-specific route for users already looking
for MFP14, a pressure powered condensate pump or a non-electric way to lift
hot condensate. It sits inside the wider
mechanical condensate pumps
family but narrows the selection down to one documented pump body and the
currently selectable complete-unit sizes.
The current technical and installation material confirms MFP14 as an automatic pump powered by steam or compressed air for lifting condensate and other liquids. In suitable duties it can discharge directly from vacuum equipment or pressurised plant, and when paired with ball float steam traps it is intended to remove condensate from temperature-controlled heat exchangers, including vacuum conditions.
The documented range also includes MFP14S and MFP14SS, but this page keeps
the selector focused on standard MFP14 complete-unit options only.
MFP14 is the ductile iron versionMFP14S is the cast steel versionMFP14SS is the stainless steel version1", 1 1/2", 2" and 3" x 2" threaded BSP routes, plus DN25, DN40, DN50 and DN80 x DN50 flanged routesPN16, with motive gas inlet pressure up to 13.8 bar gBefore final specification, confirm motive pressure, total backpressure, actual condensate load and installation height. The same documentation states that total lift plus backpressure must stay below the available motive inlet pressure.
0.15 m, with 0.3 m recommended7 litres on DN25 / DN40, 12.8 litres on DN50, and 19.3 litres on DN80 x DN50APT14HC is a flanged PN16 automatic pump trap with an SG iron body, DN50 x DN40 process connections and 8 litres nominal discharge per cycle for pressure-powered condensate removal under changing pressure or vacuum conditions.
APT14 is a Spirax Sarco automatic pump-trap that drains continuously when pressure is available and switches to pressure-powered pumping when backpressure or vacuum prevent ordinary trap discharge.
Steam-operated PN10 automatic pump trap that switches between trapping and pressure-powered condensate pumping for process and heating plant with low differential pressure, backpressure or vacuum.
MFP14 selection usually sits between hot condensate lifting, low differential pressure drainage and wider condensate recovery decisions.
Return to the mechanical condensate pump family to compare MFP14 with pump traps, pressure powered pumps and wider non-electric condensate recovery routes.
Review stall guidance when the application starts from a temperature-controlled heat exchanger, backpressure or vacuum drainage problem rather than from a model number.
Compare electrical condensate pumps when the project is better suited to a conventional receiver-and-motor arrangement.
