SKP25.611U1 Siemens Pressure Regulator

Overview

The Siemens SKP25.611U1 is a high-performance electro-hydraulic actuator designed for use with VG series gas valves. This specialized model functions as a safety shut-off valve and a high-bias proportionator, providing both safety control and precise gas pressure regulation in a single unit. It is engineered to maintain a specific air/gas ratio, featuring a factory-installed spring that allows for a negative offset (bias) to support sophisticated combustion requirements. Its modular design and compact footprint reduce the need for multiple gas train components, streamlining installation for industrial and commercial burner applications.

Features

• Combined safety shut-off and pressure regulating functions reduce gas train size and complexity
• High-bias proportionator functionality with a factory-installed spring for 0 to -4 inch W.C. bias
• Proof of Closure (POC) over-travel switch for enhanced safety monitoring
• Slow opening and rapid fail-safe closing (less than 0.8 seconds) upon power interruption
• Integrated visual position indicator and power-on indication light
• Modular construction allows for 360 degree actuator rotation to simplify field wiring
• Low power consumption (approximately 13.5 VA) during continuous operation

Specifications

• Model: SKP25.611U1
• Operating Voltage: 110V to 120V AC (50/60 Hz)
• Bias Range: 0 to -4 inches Water Column (W.C.)
• Power Consumption: 13.5 VA
• Ambient Temperature Range: 5 F to 140 F (-15 C to 60 C)
• Protection Rating: IP54 (standard) or NEMA 4 (with optional AGA66 kit)
• Force Output: 100 lb (450 N)
• Approvals: UL Listed, FM Approved, CSA Certified, and ISO 9001 Certified

Applications

• Supervision and regulation of industrial and commercial gas burners
• Maintaining precise air/fuel ratios in proportionator or zero governor setups
• Use with Siemens gas valve bodies (VGG, VGF, VGD, VRD) in gas trains
• Systems requiring safety shut-off combined with high-bias pressure regulation
• Industrial boilers, ovens, and process heating equipment requiring high turndown ratios