Overview
The Siemens SKP25.011U1P is an electro-hydraulic actuator designed for use with Siemens VG series gas valves. It functions as both a safety shut-off valve and a 1:1 air/gas ratio regulator or zero governor. This specific model features a Proof of Closure (POC) switch and is factory-equipped with a lavender spring, providing a bias range of 0 to -0.6 inches water column. Its modular design allows for integration with various valve bodies, reducing the overall size and complexity of the gas train.
Features
- Dual function safety shut-off and gas pressure regulation in a single unit
- Integrated Proof of Closure (POC) over-travel switch for enhanced safety signaling
- Electro-hydraulic operation ensures slow opening and immediate, fail-safe closing in less than 0.8 seconds
- Visual position indicator and power-on light for easy status monitoring
- Lavender bias spring allows for 1:1 air/gas ratio regulation with a 0 to -0.6 inch wc bias
- Modular design with 360-degree rotation for flexible installation and field wiring
- Low power consumption and durable construction suitable for industrial environments
Specifications
- Model: SKP25.011U1P
- Operating Voltage: 110 to 120 Vac (50/60 Hz)
- Power Consumption: 13.5 VA
- Bias Range: 0 to -0.6 inches wc (Lavender spring)
- Closing Time: Less than 0.8 seconds
- Ambient Temperature Range: 5 F to 140 F (-15 C to 60 C)
- Protection Rating: IP54 (standard) or NEMA 4 (with optional AGA66 kit)
- Approvals: UL listed, FM approved, and CSA certified
Applications
- Industrial and commercial burner systems requiring safety shut-off and precise pressure regulation
- 1:1 air/gas ratio control for premix burners and atmospheric burners
- Integration with Siemens VG series gas valve bodies (VGG, VGF, VGD, VRD)
- Use in gas trains for boilers, furnaces, ovens, and dryers
- Suitable for systems requiring Proof of Closure feedback to the burner management system


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