SKP75.501E2 Siemens Actuator

Overview

The Siemens SKP75.501E2 is a high-performance electro-hydraulic actuator designed for use with Siemens gas valves. It functions as a safety shut-off device and an air-gas ratio controller, specifically engineered for modulating forced draft gas burners. This model features an extended zero-point offset (bias) range and is built for 230 VAC operation, providing precise fuel regulation and rapid fail-safe closure to ensure combustion safety and efficiency in industrial and commercial burner applications.

Features

• Combines safety shut-off, constant pressure regulation, and air-gas ratio control into a single unit
• Extended zero-point offset range of -4.5 mbar for greater control flexibility
• Integrated end switch (Proof of Closure) to signal the fully closed valve position
• Electro-hydraulic opening mechanism with rapid spring-return closing in less than 0.8 seconds
• Visual position indicator and power-on light for easy status monitoring
• Modular design allowing 360-degree rotation for flexible installation and field wiring
• Durable construction suitable for gas families I, II, and III

Specifications

• Model: SKP75.501E2
• Operating Voltage: 230 VAC (50/60 Hz)
• Control Type: 1-stage opening/closing with air-fuel ratio control
• Offset Range: -4.5 mbar (extended parallel displacement)
• Power Consumption: Approximately 13.5 VA
• Protection Rating: IP54 (with suitable connectors)
• Ambient Temperature Range: -15 C to 60 C (5 F to 140 F)
• Weight: 2.3 kg (approx. 5.1 lb)
• Mounting: Four pre-mounted screws for square flange connection to VG series valves

Applications

• Modulating forced draft gas burners in industrial and commercial systems
• High-demand combustion plants, including boilers, ovens, and dryers
• Systems requiring automatic compensation for combustion chamber back pressure fluctuations
• Premix burner applications where precise air-gas mixing is critical
• Used in conjunction with Siemens VG series gas valve bodies (VGG, VGD, VGF, VRD, VRF)