Product Overview
The Siemens VXF47.125 (S55220-V104) is a high-performance 3-port flanged control valve engineered for precise modulation of hot water, chilled water, and low-pressure steam in building automation and industrial process systems. As part of Siemens’ VXF47 series, this valve features a robust cast iron or nodular iron body with a flanged connection, designed to work in conjunction with Siemens actuators (e.g., SQL, SKD, SKB series) for accurate flow control. The 3-port mixing or diverting configuration allows for seamless blending or distribution of media, making it ideal for HVAC and process control loops where temperature and flow stability are critical. Its balanced plug design ensures low actuation force and high close-off pressure, while the flanged end connections provide secure, leak-free installation in large-bore piping networks.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | 3-Port Flanged Control Valve (Mixing / Diverting) |
| Model Designation | VXF47.125 / S55220-V104 |
| Nominal Size (DN) | DN 125 (flanged to ISO 7005 / EN 1092-2) |
| Operating Pressure | Up to 1600 kPa (16 bar) static; differential pressure dependent on actuator |
| Media Temperature Range | -10 °C to +150 °C (with appropriate actuator and stem sealing) |
| Flow Characteristic | Equal percentage or linear (selectable via actuator/positioner) |
| Leakage Class | Class IV (metal-to-metal) or Class VI (soft-seated) depending on trim |
| Mounting & Connection | Flanged per ISO 7005 / EN 1092-2; actuator mounting per ISO 5211 |
| Body Material | Cast iron (EN-GJL-250) or nodular iron (EN-GJS-400-18-LT) |
| Trim Material | Stainless steel plug and seat, chrome-plated stem |
Engineering Features & Advantages
- Precision Flow Control: The 3-port mixing/diverting design enables accurate blending of two inlet flows or distribution to two outlets, maintaining stable temperature and flow in complex hydronic circuits.
- Balanced Plug Design: Reduces required actuator force, allowing use of compact actuators while achieving high close-off pressures and minimal leakage.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction and wear-resistant internal components for extended service life.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original SIEMENS OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.
Typical Industrial Applications
The Siemens VXF47.125 (S55220-V104) is a high-performance 3-port flanged control valve engineered for precise modulation of hot water, chilled water, and low-pressure steam in building automation and industrial process systems.
PRODUCT IMAGES
SIEMENS VXF47.125 / S55220-V104 3-Port Flanged Control Valve
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 VXF47.125 / S55220-V104 2-Way Pressure Independent Control Valve. This Germany-made 24V AC/DC hydraulic component features a pressure-independent balancing design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.