Product Overview
The SIT 845 SIGMA PS is a precision-engineered gas control valve manufactured by SIT La Precisa, a globally recognized leader in gas combustion control technology. Designed for the SIGMA series platform, this valve operates as a multi-functional gas pressure regulator and safety shut-off device, integrating pressure stabilization, flame supervision compatibility, and modulated gas flow control into a single compact assembly. The SIT 845 SIGMA PS serves as a critical safety and control component in gas-fired industrial and commercial appliances, ensuring precise gas delivery, stable outlet pressure, and reliable emergency shut-off in the event of flame failure or pressure anomalies. Its robust diaphragm-actuated design and servo-assisted regulation mechanism deliver consistent performance across varying inlet pressures, making it an essential element in modern gas train architectures.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Gas Control Valve (Process & Pneumatic Valve) |
| Model Designation | SIT 845 SIGMA PS |
| Manufacturer | SIT La Precisa |
| Operating Pressure | Standard Industrial Gas Grade (Inlet up to 60 mbar / 200 mbar depending on configuration) |
| Outlet Pressure Range | Adjustable regulated outlet (typically 5–37 mbar for natural gas / LPG) |
| Mounting & Connection | Standard SIT flange / threaded gas train interface |
| Actuation Type | Diaphragm / servo-assisted mechanical actuation |
| Safety Function | Integrated safety shut-off valve (flame failure protection) |
Engineering Features & Advantages
- Precision Gas Pressure Regulation: The servo-assisted diaphragm mechanism maintains stable outlet pressure regardless of inlet pressure fluctuations, ensuring consistent combustion performance and energy efficiency.
- Integrated Safety Shut-Off: Built-in safety valve automatically interrupts gas flow upon flame signal loss or thermocouple/ionization probe failure, meeting stringent industrial safety standards.
- Modulated Flow Control: The SIGMA PS configuration supports progressive gas flow modulation, enabling precise temperature and output control in modulating burner systems.
- Industrial Reliability: Constructed with gas-resistant elastomers and corrosion-resistant internal components, engineered for continuous duty in high-cycle industrial burner applications.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original SIT 845 SIGMA series valves, ensuring drop-in replacement without gas train modification.
Typical Industrial Applications
The SIT 845 SIGMA PS gas control valve is widely deployed in gas-fired industrial and commercial heating systems, including industrial bakery ovens and commercial cooking equipment, gas-fired boilers and central heating plants, industrial burners and furnace systems, and commercial laundry and drying equipment. Its precise regulation and integrated safety shut-off make it a trusted component in any application requiring reliable, code-compliant gas combustion control.</p
PRODUCT IMAGES
SIT 845 SIGMA PS Gas 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.
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