The Siemens SKP25 series gas actuators are pressure-regulating electro-hydraulic actuators used with VG series gas valve bodies in industrial and commercial burner gas trains. These actuators combine gas pressure regulation and safety shut-off functionality within a compact unit, reducing the number of components required in a burner gas train.

The SKP25 actuator regulates the burner manifold gas pressure according to a predefined setpoint and can also operate as a 1:1 air-to-gas ratio regulator or zero governor in combustion control systems.

During operation, the actuator opens slowly to allow controlled gas flow and closes immediately when power is interrupted, ensuring safe shutdown of the gas supply in fault conditions.

With its modular construction, the SKP25 can be mounted directly on VG series gas valves from ½″ to 6″, making it suitable for a wide range of industrial burner applications including boilers, furnaces, and thermal process equipment.

Key Features

• Electro-hydraulic actuator for gas pressure regulating valves

• Integrated gas pressure regulation and safety shut-off

• Compatible with Siemens VG series gas valve bodies

• Applicable as 1:1 air-gas ratio regulator or zero governor

• Slow opening and fast safety shut-off operation

• Visual position indicator for valve stroke monitoring

• Power-on indicator light

• Quick-connect wiring terminals

• Modular design with 360° installation flexibility

• Low power consumption (~13.5 VA)

• Compact design for industrial burner gas trains

Applications

• Industrial gas burners

• Commercial burner systems

• Steam boiler gas trains

• Industrial furnaces and ovens

• Thermal oil heaters

• Process heating systems

• Combustion systems with air-fuel ratio control

Why Choose Siemens SKP25 gas actuator?

• Trusted Siemens combustion control technology

• Combines pressure regulation and safety shut-off in one actuator

• Reduces gas train size and component complexity

• Ensures stable gas pressure for efficient combustion

• Reliable operation in industrial environments

• Easy installation on Siemens VG series gas valves

Technical Description

The Siemens SKP25 gas actuator is an electro-hydraulic actuator designed to control gas valves in burner gas trains. It works together with VG series gas valve bodies to regulate gas pressure and provide safety shut-off functionality.

The actuator regulates burner manifold gas pressure according to a preset value using an internal pressure regulation mechanism. It can also be configured as a zero governor or air-gas ratio regulator, helping maintain proper combustion conditions.

Because the SKP25 combines several functions in one unit—pressure regulation, air-fuel ratio control, and safety shut-off—it reduces the number of components required in the burner gas train, resulting in a more compact and efficient system.

The actuator opens slowly when energized and closes immediately when power is interrupted, ensuring safe burner shutdown in emergency conditions.

Technical Specifications