Product Overview
The Siemens VKF42.350 / SQL361B570 is a premium industrial butterfly valve assembly engineered for precise flow regulation and shut-off control in HVAC, process, and industrial fluid handling systems. Manufactured by Siemens, a global leader in building automation and process control technology, this valve combines a high-performance butterfly valve body with the SQL361B570 electric actuator. The butterfly valve operates via a rotating disc mounted on a central shaft, providing efficient quarter-turn flow control with minimal pressure drop. The SQL361B570 actuator delivers reliable electric actuation with position feedback and fail-safe functionality, making this assembly ideal for modulating and two-position control applications in demanding industrial environments.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Butterfly Valve with Electric Actuator |
| Model Designation | VKF42.350 / SQL361B570 |
| Valve Size | DN350 (14-inch) nominal diameter |
| Operating Pressure | Standard Industrial Grade (Up to 16 bar rated) |
| Actuator Type | Electric motorized actuator with manual override |
| Control Signal | 3-position / modulating control (0-10 V or 4-20 mA compatible) |
| Mounting & Connection | ISO 5211 mounting flange / Wafer or Lugged body style |
| Body Material | Ductile iron or cast iron with epoxy coating |
| Disc & Seat Material | Stainless steel disc with EPDM or NBR seat |
| Temperature Range | -10°C to +120°C (depending on seat material) |
| Protection Class | IP54 / IP67 (actuator dependent) |
Engineering Features & Advantages
- Precision Flow Control: The butterfly disc design ensures accurate modulating control with low torque requirements and minimal pressure loss across the valve, optimizing system efficiency.
- Integrated Electric Actuation: The SQL361B570 actuator provides reliable motorized operation with position feedback, manual override capability, and selectable control modes for flexible integration into BMS and PLC systems.
- Industrial Reliability: Designed for dependable long-term operation in demanding industrial environments, with quality bearings and sealing systems ensuring extended maintenance intervals.
- Direct Fit Replacement: Precision-manufactured to original SIEMENS specifications for direct replacement, minimising downtime and eliminating fitment issues.
Typical Industrial Applications
The SQL361B570 actuator delivers reliable electric actuation with position feedback and fail-safe functionality, making this assembly ideal for modulating and two-position control applications in demanding industrial environments.
PRODUCT IMAGES
SIEMENS VKF42.350 / SQL361B570 Butterfly Valve with Actuator
âš¡ 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 SIEMENS VKF42.350 / SQL361B570 Butterfly Valve with Electric Actuator. This Germany-made 24V AC/DC hydraulic component features a motorized butterfly design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.