Siemens SKP Series
Electro-Hydraulic Gas Valve Actuators for Industrial Burner Systems. Precision control and safety shut-off.
Series Overview
The Siemens SKP Series is a family of electro-hydraulic gas valve actuators designed for safe and reliable control of industrial gas valves in combustion systems. Unlike purely mechanical or solenoid-based solutions, SKP actuators use electro-hydraulic technology to precisely control gas flow, ensuring secure shut-off and stable burner operation.
The SKP Series is widely applied in industrial gas burners, boiler systems, and combustion equipment where controlled valve opening, rapid shut-off, and operational safety are essential.
Functional Architecture
SKP actuators are designed to be mounted directly onto compatible Siemens gas valve bodies.
- Activation: Electrical signal from burner control unit.
- Actuation: Internal hydraulic amplification mechanism opens the valve.
- Safety: Automatic safety shut-off upon power interruption.
- Operation: When power is removed, the valve closes immediately, ensuring safe fuel isolation.
The electro-hydraulic design provides stronger actuation force compared to standard solenoid valves, making SKP suitable for larger industrial gas valves.
Typical Applications
SKP Series actuators are commonly used in:
- Industrial gas burners
- Commercial boiler systems
- Process heating equipment
- Dual-fuel combustion systems
- Burner management system (BMS) assemblies
They are typically integrated with Siemens burner control units and gas valve assemblies to form a complete fuel safety chain.
Electro-Hydraulic
High actuation force and precision control compared to standard solenoids.
Safety Shut-Off
Instant closure upon power loss ensures maximum system safety.
Core Functional Characteristics
All SKP Series actuators share these structural principles:
- Electro-hydraulic actuation mechanism
- Fast safety shut-off response
- Direct mounting onto Siemens gas valve bodies
- Designed for continuous industrial operation
- High operational reliability in demanding environments
Model Differentiation Within the SKP Series
Different SKP models are designed to support specific functional requirements:
- Single-stage opening
- Two-stage or slow-opening configuration
- Pressure regulation capability
- With or without proof-of-closure function
- Voltage variations
These differences allow the SKP Series to support a wide range of burner sizes and safety classifications.
SKP Series Variants
| Model | Functional Type | Typical Use Case |
|---|---|---|
| SKP15 | Single-stage actuator | Standard industrial gas burners |
| SKP25 | Slow-opening actuator | Systems requiring controlled gas ramp-up |
| SKP55 | With pressure regulation | Applications requiring precise gas pressure control |
| SKP75 | Extended functionality | Complex burner safety configurations |
Model selection should consider burner capacity, required safety logic, and gas valve compatibility.
Integration & Compatibility
SKP Series actuators are typically integrated with:
- Siemens gas valve bodies
- Burner control units (LME, LMO, LMV, etc.)
- Gas pressure switches
- Flame detection systems (QRB, QRA, RAR)
Together, these components form a complete combustion safety control architecture.
Positioning Within Industrial Combustion Systems
- Burner Control Unit: Controls sequence and safety logic.
- Flame Detector: Confirms combustion presence.
- SKP Actuator: Represents the actuation layer, physically controlling gas flow based on verified safety conditions.
Selection Guide
SKP15 provides basic ON/OFF safety shut-off.
SKP55 combines actuation with precise gas pressure control.
SKP25 enables smooth startup to prevent pressure shocks.
Valve Sizing
Matching an actuator to your gas valve? We can ensure you get the right SKP model for your system.
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