SKP75.003E2 Siemens Actuator

Overview

The Siemens SKP75.003E2 is a high-performance electro-hydraulic actuator designed for use with gas and air valves in industrial and commercial combustion systems. It functions as a ratio pressure governor, controlling gas pressure in relation to combustion air pressure to maintain a constant air-gas ratio throughout the burner’s entire load range. This safety-critical component provides both shut-off and precise pressure regulation in a single unit, eliminating the need for separate upstream constant pressure regulators in many applications.

Features

• Combined safety shut-off and air-gas ratio control in a single compact unit
• Electro-hydraulic opening with a fail-safe spring-return closure in less than 0.8 seconds
• Automatic compensation for variations in combustion chamber back pressure
• Integrated stroke indication via a transparent window for visual position monitoring
• Simplified commissioning with low-fire and excess-air biasing adjustments
• Durable design with IP54 protection rating for reliable operation in industrial environments
• Modular construction compatible with various Siemens valve bodies (VGG, VGF, VGD, VRD)

Specifications

• Model: SKP75.003E2
• Operating Voltage: AC 230 V (50/60 Hz)
• Power Consumption: Maximum 13.5 VA
• Function: Single-stage opening and closing with ratio pressure governor
• Opening Time: Approximately 6 to 14 seconds (depending on valve size)
• Closing Time: Less than 0.8 seconds
• Ambient Temperature Range: -10 C to +60 C
• Protection Rating: IP54
• Weight: Approximately 2.3 kg (5.1 lbs)
• Switch Configuration: Without end switch (no Proof of Closure switch)

Applications

• Modulating forced draught gas burners
• Industrial and commercial boilers and furnace systems
• Premix burner applications requiring precise air-fuel ratio maintenance
• Large-scale ovens, dryers, and process heating equipment
• Compensation systems for plants with flue gas fans or modulating flue gas dampers