The Siemens SKP75 series is used together with Siemens VG series gas valve bodies to regulate burner manifold gas pressure according to combustion air pressure. This allows the system to maintain a constant air-to-gas ratio across the entire burner load range, improving combustion efficiency and safety.

These actuators combine three key functions—safety shut-off, pressure regulation, and air-gas ratio control—within a single device, which reduces the number of components required in a burner gas train and simplifies installation.

The SKP75 actuator opens slowly during operation and closes immediately when power is lost, ensuring safe burner shutdown in emergency or fault conditions.

Its modular design allows easy installation on VG gas valve bodies ranging from ½″ to 6″, making it suitable for a wide variety of industrial combustion systems.

Key Features

• Electro-hydraulic gas valve actuator

• Integrated air-gas ratio control and pressure regulation

• Safety shut-off function with fast closing on power loss

• Compatible with Siemens VG series gas valves

• Maintains constant gas pressure relative to combustion air pressure

• Compensation for combustion chamber back-pressure fluctuations

• Maintains air-gas ratio even when airflow changes

• Visual valve position indicator

• Power-on indicator light

• Quick-connect wiring terminals

• Low power consumption (~13.5 VA)

• Modular design with 360° installation flexibility

Applications

• Industrial gas burners

• Commercial burner systems

• Steam boilers

• Industrial furnaces and ovens

• Thermal oil heaters

• Process heating plants

• Premix burner systems

• Recuperative burners with preheated combustion air

Why Choose Siemens SKP75 actuator?

• Combines three gas train functions in one device

• Reduces gas train size, weight, and complexity

• Ensures stable combustion and accurate air-fuel ratio

• Reliable Siemens combustion control technology

• Easy installation and commissioning

• Designed for continuous industrial burner operation

Technical Description

The Siemens SKP75 actuator regulates burner manifold gas pressure based on the pressure of the combustion air. This differential-pressure control maintains the correct air-fuel mixture without requiring an additional constant gas pressure regulator.

By combining pressure regulation, air-gas ratio control, and safety shut-off within one actuator, the SKP75 significantly reduces the number of valves and fittings required in the gas train. This results in a more compact, efficient, and reliable burner system.

The actuator opens gradually to allow controlled gas flow and closes immediately when power is interrupted, ensuring rapid shutdown of the gas supply during faults or safety trips.

Technical Specifications