Samson 3241 User Manual (English)

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Questions and Answers:

J
jeremyclarkJul 27, 2025
What to do if increased flow through closed Samson Control Unit valve (seat leakage)?
- O
  Omar CowanJul 27, 2025
  If you observe increased flow through a closed Samson Control Unit valve, 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 would need to replace the seat and plug.
W
Wesley RobinsonAug 3, 2025
Why does the Samson Control Unit valve leak to the atmosphere (fugitive emissions)?
- S
  Scott FletcherAug 3, 2025
  A Samson Control Unit valve may leak to the atmosphere due to several reasons. It could be caused by defective packing, or if it's a version with adjustable packing, the packing might not be tightened correctly. Another possibility is loose flanged joints or worn-out body gaskets. Check the flanged joints. If the issue persists, replace the gaskets at the flanged joints.
C
Christina DavisAug 11, 2025
What to do if actuator and plug stem does not move on demand in Samson Control Unit?
- D
  Daryl GriffithAug 11, 2025
  If the actuator and plug stem in your Samson Control Unit do not move on demand, first check if the actuator is blocked and remove the blockage. You can put the control valve out of operation. Also, verify the signal pressure and check the signal pressure line for any leakage. If the diaphragm in the actuator is defective, consult the actuator documentation.
C
cindy26Aug 19, 2025
Why actuator and plug stem does not stroke through the full range in Samson Control Unit?
- A
  Amanda JohnsonAug 19, 2025
  If the actuator and plug stem in your Samson Control Unit do not stroke through the full range, this could be due to several reasons. Check the signal pressure and inspect the signal pressure line for leaks. Also, the travel stop might be active. Furthermore, incorrect settings of valve accessories can cause this issue, so check the settings of the valve accessories.

Samson 3241 Specifications

General

Brand	Samson
Model	3241
Category	Control Unit
Language	English

Summary

Safety Instructions and Measures

Intended Use and Foreseeable Misuse

Defines the intended application and prohibited uses of the control valve for safe operation.

Personnel Qualifications and Responsibilities

Details requirements for personnel operating, mounting, and servicing the valve and their duties.

General Safety Guidance

Covers PPE, revisions, safety features, residual hazards, standards, and referenced documentation.

Specific Hazard Warnings

Highlights critical safety warnings for severe personal injury, personal injury, and property damage.

Markings on the Device

2.1 Valve Nameplate Details

Describes the information found on the valve's nameplate, including type, size, and material.

2.2 Actuator Nameplate

Information regarding the actuator's nameplate and associated documentation.

2.3 Material Numbers

Explains how material numbers are used to identify valve components and trim materials.

2.4 Adjustable Packing Label

Details the instructional label affixed to valves with adjustable packing.

2.5 Optional RFID Tag

Information on the location and use of the optional RFID tag for data retrieval.

Design and Principle of Operation

Fail-Safe Action Modes

Explains the valve's behavior during air supply or control signal failure (FA and FE).

3.1 Valve Versions

Describes different valve versions, including insulating sections, bellows seals, and micro-flow elements.

3.2 Additional Fittings and Accessories

Discusses recommended fittings like strainers, bypass valves, and accessories.

3.3 Valve Accessories

References information sheets for specific valve accessories.

3.4 Technical Data Overview

Summarizes key technical specifications like temperature range, leakage class, and conformity.

Dimensions and Weights

Provides detailed tables for valve dimensions and weights across various sizes and configurations.

Shipment and On-Site Transport

4.1 Accepting Delivered Goods

Procedure for checking the shipment upon delivery, including scope and damage assessment.

4.2 Removing Packaging

Instructions on when and how to remove valve packaging before installation.

4.3 Transporting and Lifting the Valve

Guidance on safe transportation and lifting methods, including precautions and equipment.

4.3.1 Transporting the Valve

Methods for transporting the valve on-site, including protection against influences.

4.3.2 Lifting the Valve

Detailed instructions for safely lifting the valve using appropriate equipment and slings.

4.4 Storing the Valve

Guidelines for proper storage to prevent damage, including temperature and humidity.

Installation

5.1 Installation Conditions

Specifies requirements for valve installation, including work position and pipeline routing.

5.2 Preparation for Installation

Steps to ensure the valve is ready for installation, such as cleanliness and tool readiness.

5.3 Mounting the Device

Procedures for mounting the valve, yoke, and related components.

5.3.1 Mounting Anti-Rotation Fixture

Instructions for mounting the external anti-rotation fixture onto the plug stem.

5.3.2 Mounting the Actuator Onto the Valve

Steps for attaching the actuator to the valve assembly, including safety notes.

5.3.3 Installing the Valve into the Pipeline

Guidance on safely installing the valve into the pipeline, with flange and welding end types.

5.4 Testing the Installed Valve

Procedures for testing the valve after installation, including leakage and pressure tests.

Leakage, Travel Motion, and Fail-Safe

Tests for seat leakage, actuator stem movement, and fail-safe position verification.

5.4.4 Pressure Test

Procedure for conducting a pressure test on the installed valve to ensure integrity.

Start-up

Start-up Procedures

Steps and conditions required before starting up the valve or returning it to service.

Operation

7.1 Normal Operation

Guidelines for normal operation, including handwheel position for automated valves.

7.2 Manual Operation

Procedures for manually operating the valve in case of auxiliary energy failure.

Malfunctions

8.1 Troubleshooting Guide

Identifies common malfunctions, their possible causes, and recommended corrective actions.

8.2 Emergency Action Procedures

Steps to take in case of a valve malfunction, including shutdown and contacting support.

Servicing

9.1 Periodic Testing and Inspection

Recommendations for regular checks to prevent failure and maintain optimal performance.

9.2 Service Work Preparations

Steps required to prepare for servicing, including safety precautions and tool setup.

9.3 Installing After Service Work

Procedures for reassembling and putting the valve back into operation after servicing.

9.4 Service Work Procedures

Detailed instructions for performing common service tasks on the valve.

Replacing Gasket, Packing, and Seat/Plug

Step-by-step guides for replacing key valve components like gaskets, packing, and seat/plug.

9.5 Ordering Spare Parts and Supplies

Guidance on how to order spare parts, lubricants, and tools from SAMSON.

Decommissioning

Decommissioning Procedures

Steps for safely taking the valve out of service for maintenance or removal.

Removal

11.1 Removing Valve from Pipeline

Instructions for detaching the valve from the pipeline, covering flange and welding end types.

11.2 Removing Actuator from Valve

Guidance on safely separating the actuator from the valve assembly.

Repairs

12.1 Returning Devices to SAMSON

Procedure for returning defective devices to SAMSON for repair, including required information.

Disposal

Disposal and Recycling Guidelines

Instructions for the proper disposal of the valve and its components according to regulations.

Certificates

Declarations of Conformity and Compliance

Lists declarations of conformity related to pressure equipment and machinery directives.

Appendix

15.1 Tightening Torques, Lubricants, and Tools

Reference for recommended tightening torques, lubricants, and tools for valve maintenance.

15.2 Spare Parts List

Index of available spare parts with corresponding part numbers for the valve assembly.

15.3 After-Sales Service Contact

Information on how to contact SAMSON's after-sales service for support and inquiries.

15.4 UK Sales Region Information

Details relevant to the UK market, including importer information and regulations.

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