SKP25.012U2 Siemens Actuator

Overview

The Siemens SKP25.012U2 is a high-performance electro-hydraulic actuator designed to provide safety shut-off and gas pressure regulation in a single, compact unit. Engineered for industrial and commercial burner applications, it is used in combination with Siemens VG series gas valve bodies. The actuator features a modular design that allows for easy mounting and simplified gas train assembly by reducing the number of required components and fittings. This specific model operates on 220/230Vac and includes integrated Proof of Closure (POC) and auxiliary switches for enhanced system monitoring and safety.

Features

• Safety shut-off and constant pressure regulation combined in one unit
• Integrated Proof of Closure (POC) over-travel switch and auxiliary switch
• Slow opening and fast closing (< 0.8 seconds) for safety-critical operation
• Visible position indicator and “power on” indication light
• Modular design compatible with VG series gas valves from 1/2-inch to 6-inch sizes
• Applicable as a 1:1 air/gas proportionator or zero governor
• Excellent pressure control characteristics with zero regulator droop
• Quick-connect wiring terminals and 360-degree actuator rotation for flexible installation

Specifications

• Model: SKP25.012U2
• Operating Voltage: 220 to 240 Vac (+10% / -15%)
• Operating Frequency: 50 to 60 Hz
• Power Consumption: 13.5 VA
• Protection Rating: IP54 (standard) or NEMA 4 (optional)
• Ambient Operating Temperature: 5 F to 140 F (-15 C to 60 C)
• Maximum Stroke: 1 inch (26 mm)
• Weight: Approximately 1.6 kg (3.5 lbs)
• Approvals: UL Listed, FM Approved, CSA Certified

Applications

• Industrial and commercial gas-fired burner systems
• Large-scale boilers and furnace operations
• Ovens, dryers, and process heating equipment
• Gas train configurations requiring safety shut-off and pressure regulation
• Systems utilizing air/gas ratio control or zero governor applications