To Next PageTo Next PageWhy is there jolting movement of the actuator and plug stem in my Samson 3251?
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.
What to do if the Samson Control Unit actuator and plug stem does not move on demand?
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.
How to fix a Samson Control Unit actuator that doesn't stroke through the full range?
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.
Why is my Samson 3251 Control Unit valve leaking to the atmosphere?
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.
What to do if there is increased flow through a closed Samson 3251 valve?
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.
What to do if actuator in Samson 3251 does not move through the whole range?
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.
How to fix actuator that does not move on demand in Samson 3251 Control Unit?
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.
Why is there increased flow through the closed Samson Control Unit valve?
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.
General| Brand | Samson |
|---|---|
| Model | 3251 |
| Category | Control Unit |
| Language | English |
Details required PPE and hazards from hot/cold parts, noise, moving parts, and residual medium.
Explains the valve's design and the actuator's fail-safe positions (FA/FE).
Warns about hazards during transport and lifting, including suspended loads and equipment capacity.
Guides mounting the valve, actuator, anti-rotation fixture, and attaching accessories.
Outlines safety precautions and tests for leakage, travel motion, fail-safe, and pressure.
Lists safety warnings related to hot/cold parts, pressure, noise, moving parts, and vented air.
Provides steps for starting up the valve, including pre-start checks and gradual valve opening.
Lists safety warnings relevant during normal valve operation.
Lists safety warnings for decommissioning, covering bursting, burns, pressure, noise, and moving parts hazards.
