SKP25.403E2 Siemens Pressure Regulator

Overview

The Siemens SKP25.403E2 is a high-performance electro-hydraulic actuator designed for use with gas valves in industrial and commercial burner applications. Functioning as both a safety shut-off valve and a high-pressure gas regulator, it simplifies gas train construction by combining two essential safety functions into a single, compact unit. This actuator is engineered for one-stage opening and closing, featuring a slow opening cycle and an immediate closing mechanism upon power interruption to ensure maximum safety.

Features

• Integrated safety shut-off and high-pressure regulation in one unit to reduce gas train components
• Electro-hydraulic operation providing slow opening and rapid closing (under 0.8 seconds)
• High-pressure version capable of handling constant pressure governing up to 1,500 mbar
• Built-in stroke indication for visual monitoring of valve position
• Ventless regulator design eliminates the need for external vent lines in many applications
• Modular construction allows for easy mounting on various Siemens VG series valve bodies
• Maintenance-free operation with a durable design suited for demanding industrial environments

Specifications

• Model: SKP25.403E2
• Operating Voltage: AC 230 V (50/60 Hz)
• Power Consumption: Maximum 13.5 VA
• Pressure Range: High-pressure version up to 1,500 mbar (approx. 20 psi)
• Opening Time: 6 to 10 seconds (depending on valve size)
• Closing Time: Less than 0.8 seconds
• Protection Rating: IP54 (NEMA 4 possible with additional gaskets)
• Operating Temperature: -10 C to +60 C
• Weight: Approximately 1.6 kg (3.5 lbs)

Applications

• Supervision and regulation of gas supply for forced draft gas burners
• Industrial furnaces and atmospheric burners requiring precise high-pressure control
• Use in HVAC systems and boiler plants for commercial heating
• Integration into gas trains for 1:1 air/gas ratio control or zero governor applications
• Safety shut-off for gas families I, II, and III and air in combustion plants