Fiorentini 3S156 Flame Detector
Technical specs, application notes, replacement checks, and related model references.
Product Overview
The Pietro Fiorentini 3S156 is an advanced air-gas ratio control valve (zero governor) engineered for modulating and premix burner systems. By sensing the combustion air pressure (impulse signal), it proportionally adjusts the gas flow to maintain a constant, optimal air-to-fuel ratio across the entire firing range (typically 1:1 or adjustable ratios). This pneumatic cross-connection guarantees highly efficient, low-emission combustion, preventing fuel waste and minimizing NOx and CO outputs.
Technical Specifications
Component Type
Air-Gas Ratio Valve / Zero Governor
Control Principle
Pneumatic 1:1 ratio control
Control Range
High turndown capability
Response Time
Rapid, low-hysteresis adjustment
Connection Type
Threaded (ISO 7/1)
Approvals
CE, EN 12067-1
Selection Notes & Data Verification
The 3S156 page is structured for engineering comparison: confirm the product type, firing range, fuel type, operating mode, electrical supply, and safety approvals against the manufacturer datasheet before specifying the burner or component.
Burner.wiki normalizes product data for discovery and comparison, but final selection should account for combustion chamber backpressure, local emission limits, control sequence requirements, and site commissioning conditions.
Typical Applications
Related Models
Related Knowledge
FAQ
What is Fiorentini 3S156 used for?
Fiorentini 3S156 is referenced as a flame detector for industrial combustion systems. Verify the exact application against the burner documentation, control cabinet wiring, and manufacturer datasheet.
Can 3S156 replace another model?
Replacement depends on voltage, safety timing, wiring terminals, flame supervision method, mechanical fit, and local combustion safety requirements.
What should be checked before installing 3S156?
Check supply voltage, burner sequence, fuel type, pressure or capacity range, detector compatibility, safety loop configuration, and the equipment nameplate before commissioning.
Documentation Note
Technical documentation should be verified against the manufacturer datasheet, burner cabinet wiring diagram, and equipment nameplate before installation or replacement.
- Check supply voltage and frequency.
- Confirm terminal layout and safety interlocks.
- Verify flame detector or actuator compatibility.
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