Samson 3251 User Manual (English)

Questions and Answers:

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Paul Khan DDSAug 21, 2025
What to do if the Samson 3251 valve leaks to the atmosphere?
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  robinbowmanAug 21, 2025
  If the Samson Control Unit valve leaks to the atmosphere, it could be due to several reasons. The packing might be defective and needs replacement. If it's a version with adjustable packing, it might not be tightened correctly. For versions with a bellows seal, the metal bellows seal could be defective. Also, check if the flange joint is loose or the gasket is worn out. In such cases, check the flange joint and replace the gasket.
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tinahayesAug 22, 2025
Why is there increased flow through the closed Samson Control Unit valve?
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  Daniel DavisAug 23, 2025
  If you notice increased flow through a closed Samson Control Unit valve, it may be due to dirt or foreign particles deposited between the seat and plug. In this case, shut off the section of the pipeline and flush the valve. It could also be that the valve trim, particularly with a soft seat, is worn. Consider replacing the seat and plug.
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Justin LewisAug 25, 2025
How to fix actuator that does not move on demand in Samson 3251 Control Unit?
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  Sheila RobinsonAug 25, 2025
  If the actuator or plug stem of your Samson Control Unit does not move on demand, it could be due to a blocked actuator. Check the attachment and unblock the actuator. Also, the signal pressure might be too low. Inspect the signal pressure and check the signal pressure line for any leakage.
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carol32Aug 27, 2025
What to do if actuator in Samson 3251 does not move through the whole range?
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  John DillonAug 27, 2025
  If the actuator or plug stem of your Samson Control Unit does not move through the whole range, the signal pressure might be too low. Check the signal pressure and inspect the signal pressure line for any leakage.
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Kenneth CobbAug 27, 2025
What to do if there is increased flow through a closed Samson 3251 valve?
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  John MillerAug 27, 2025
  If you observe increased flow through a closed valve, also known as seat leakage, it could be due to dirt or foreign particles lodged between the seat and plug. Try shutting off the pipeline section and flushing the valve to remove any debris. Alternatively, the valve trim, especially with a soft seat, might be worn. In this case, you should replace the seat and plug.
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Samantha LopezAug 29, 2025
Why is my Samson 3251 Control Unit valve leaking to the atmosphere?
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  Mark LivingstonAug 29, 2025
  A valve leaking to the atmosphere, also known as fugitive emissions, can be caused by several factors. It could be due to defective packing, which requires replacement. If you have a version with adjustable packing, the packing might not be tightened correctly; adjust it accordingly. Another cause may be loose flanged joints or worn-out body gaskets, so check the flanged joint and replace the gaskets if needed.
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Autumn RichardsonAug 31, 2025
How to fix a Samson Control Unit actuator that doesn't stroke through the full range?
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  Roberto McdonaldAug 31, 2025
  If the actuator and plug stem do not stroke through the full range, it could be due to several reasons. The signal pressure might be too low, so check the signal pressure and the signal pressure line for leakage. It is also possible that the travel stop is active. Another possibility is an incorrect setting of valve accessories, so verify their settings.
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Kenneth GraySep 1, 2025
What to do if the Samson Control Unit actuator and plug stem does not move on demand?
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  qstephensSep 2, 2025
  If the actuator and plug stem do not move on demand, it could be due to several reasons. The actuator might be blocked; in this case, put the control valve out of operation and remove the blockage. Another cause may be a defective diaphragm in the actuator, so refer to the actuator documentation. A low signal pressure could also be the cause; check the signal pressure and the signal pressure line for any leakage.
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hinessarahSep 3, 2025
Why is there jolting movement of the actuator and plug stem in my Samson 3251?
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  Alexander MerrittSep 3, 2025
  If you are experiencing jolting movement of the actuator and plug stem, and you have a version with adjustable packing, the packing might be tightened too far. Correctly tighten the packing.
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hernandezsarahSep 5, 2025
Why is my Samson 3251 valve leaking?
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  Tracy Graham MDSep 5, 2025
  If the Samson Control Unit valve leaks to the atmosphere, it could be due to several reasons. The packing might be defective and needs replacement. If it is the version with adjustable packing, it might not be tightened correctly and needs adjustment. If the unit uses a bellows seal, the bellows seal might be defective. Also, check if the flange joint is loose or the gasket is worn out, requiring a gasket replacement.