Product Overview
The SAMSON 3241 (Part No. 1165788) is a pneumatically actuated control valve engineered for precise throttling and on/off regulation of process media in industrial fluid control loops. Manufactured by SAMSON AG, a global leader in control valve technology, this globe-style valve combines a robust valve body with a spring-return pneumatic diaphragm actuator. The 3241 series operates on a force-balance principle, where the actuator thrust positions a contoured plug relative to the seat to modulate flow in direct response to a pneumatic control signal (typically 3–15 psi or 0.2–1.0 bar). It serves as a critical final control element in pressure, flow, temperature, and level control loops across chemical, petrochemical, and general process industries.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pneumatic Control Valve (Globe Valve, Spring-Return Diaphragm Actuator) |
| Model Designation | SAMSON 3241 / 1165788 |
| Operating Pressure | Standard Industrial Grade (Up to PN 16 / PN 25 / PN 40 depending on body rating) |
| Mounting & Connection | Flanged (DIN EN 1092-1 / ANSI) or Threaded per Manufacturer Interface |
| Actuator Type | Pneumatic Diaphragm Actuator, Spring-Return (Air-to-Open / Air-to-Close) |
| Control Signal Range | 0.2 – 1.0 bar (3 – 15 psi) standard pneumatic signal |
| Trim Characteristics | Linear or Equal Percentage Contoured Plug |
| Body Material Options | Cast Iron, Cast Steel, Stainless Steel (per application) |
Engineering Features & Advantages
- Precision Throttling Control: The contoured plug and cage-guided trim deliver accurate, repeatable flow modulation across the full travel range, ensuring stable process control even under varying load conditions.
- Robust Pneumatic Actuation: The spring-return diaphragm actuator provides reliable fail-safe operation (spring closes or opens on air failure) and is optimized for low hysteresis and high positioning accuracy.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a rugged valve body and wear-resistant trim materials that extend service life and reduce maintenance downtime.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original SAMSON OEM standards, ensuring drop-in replacement without piping or mounting modifications.
- Versatile Configuration: Available in multiple body ratings, trim characteristics, and actuator orientations to suit a wide range of process media and control loop requirements.
Typical Industrial Applications
The SAMSON 3241 pneumatic control valve is widely deployed in heavy industrial scenarios including chemical and petrochemical processing plants for
PRODUCT IMAGES

SAMSON 3241 / 1165788 Pneumatic Control Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine SAMSON 3241 / 1165788 Solenoid Directional Control Valve. This German-made hydraulic component features a robust spool design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.