Blagdon Pump B25 User Manual (English)

Questions and Answers:

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Elizabeth HernandezAug 3, 2025
Why won't my Blagdon Pump Water Pump start?
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  Elizabeth ScottAug 3, 2025
  Your Blagdon Pump Water Pump might not start due to several reasons. It could be a malfunction or seizure of the air valve assembly, an obstructed fluid line or diaphragm chamber, diaphragm failure, diaphragm seal failure, or an air valve system malfunction. Also check if air is connected to the exhaust. To resolve this, check the carrier for freedom of movement (clean, oil, and replace if necessary), clean the fluid line or increase its size, remove any obstruction in the diaphragm chamber, replace the diaphragm or shaft seals, check all seals in the valve chest assembly, and reconnect the air inlet to the correct location.
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markdoyleAug 9, 2025
What to do if fluid is discharged from the air exhaust of my Blagdon Pump Water Pump?
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  Marilyn LawrenceAug 9, 2025
  If fluid is being discharged from the air exhaust of your Blagdon Pump Water Pump, this could be 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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Christopher PottsAug 15, 2025
What to do if my Blagdon Pump B25 Water Pump strokes but won't discharge?
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  Janet PerryAug 15, 2025
  If your Blagdon Pump Water Pump is stroking but not discharging, 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. Shorten the suction line, check and correct any suction line leakage, check and remove any obstruction from the valve ball (or replace it), clear the suction line or strainer, and replace the diaphragm if necessary.
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pcarlsonAug 21, 2025
Why is the flow from my Blagdon Pump Water Pump erratic?
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  dean95Aug 21, 2025
  Erratic flow from your Blagdon Pump Water Pump can be caused by diaphragm failure on one side, a valve ball not seating correctly, suction leakage, or an air valve system malfunction. Replace the diaphragm, check and remove any obstruction from the valve ball, check and correct any suction leakage, replace shaft seals and check all seals in the valve chest assembly.