Blagdon Pump 25 Series User Manual (English)

Questions and Answers:

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Carlos SimsAug 4, 2025
What to do if my Blagdon Pump 25 Series is not starting?
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  Jeremy HernandezAug 5, 2025
  If your Blagdon Pump Water Pump isn't starting, several issues could be the cause. It might be due to an air valve assembly malfunction, an obstructed fluid line, or a blocked diaphragm chamber. The diaphragm itself could have failed, or there could be a diaphragm seal failure or air valve system malfunction. Also, check if the air is connected to the exhaust. To resolve this, check the carrier for freedom of movement, clean, oil, and replace parts as necessary. Clean the fluid line or increase its size, remove any obstructions, replace the diaphragm or shaft seals, and check all seals in the valve chest assembly. Finally, ensure the air is correctly connected to the inlet.
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amywilliamsAug 11, 2025
Why is my Blagdon Pump 25 Series discharging fluid from the air exhaust?
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  zchavezAug 11, 2025
  If your Blagdon Pump Water Pump is discharging fluid from the air exhaust, it's likely due to a diaphragm failure or a loose frontplate. Replace the diaphragm and re-torque the frontplate to the manual's specifications.
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Justin ScottAug 17, 2025
What to do if my Blagdon Pump 25 Series strokes but will not discharge?
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  kevinjohnsonAug 17, 2025
  If your Blagdon Pump Water Pump strokes but doesn't discharge, it could be due to excessive suction lift, suction line leakage, a valve ball not seating correctly or being damaged, a clogged suction line or strainer, or diaphragm failure. Try shortening the suction line, checking and correcting any suction line leakage, inspecting and clearing or replacing the valve ball, clearing any clogs, and replacing the diaphragm.