SKP55.013U2 Siemens Controller

Overview

The Siemens SKP55.013U2 is a high-performance electro-hydraulic actuator designed for use with Siemens VG series gas valve bodies. It serves as a safety shut-off valve and a differential pressure air/gas ratio controller in a single, compact unit. This 1:1 ratio controller maintains a constant air-to-gas ratio regardless of air volume changes by adjusting the gas pressure based on the sensed differential air pressure. Its modular design allows it to be used with a wide range of valve sizes from 1/2-inch to 6-inch, streamlining gas train construction by reducing the number of necessary components and fittings.

Features

• Combined safety shut-off and differential pressure air/gas ratio control
• 1:1 tracking characteristic ensures the air/gas ratio remains constant across the entire firing range
• Automatic compensation for combustion chamber backpressure fluctuations
• Fast-acting safety shut-off function with a closing time of less than 0.8 seconds
• Visual position indicator and integrated “power on” indication light
• Modular design with 360-degree actuator rotation for flexible field wiring and installation
• Slow opening time to ensure smooth burner start-up
• Low power consumption for efficient operation

Specifications

• Model: SKP55.013U2
• Operating Voltage: AC 220 V to 240 V (50/60 Hz)
• Power Consumption: 13.5 VA
• Closing Time: < 0.8 seconds
• Opening Time: Approximately 6 to 14 seconds (depending on valve size)
• Protection Rating: IP54 (NEMA 1, 2, 5, and 12 standard; NEMA 4 with optional kit)
• Operating Temperature: -10 C to +60 C
• Weight: Approximately 4.2 lbs (1.9 kg)
• Approvals: UL Listed, FM Approved, CSA Certified, ISO 9001

Applications

• Industrial and commercial forced-draft gas burners
• Recuperative burners featuring combustion air preheating
• Burner systems with continuously variable air or gas nozzle openings
• Systems with negative pressure levels on either the gas or air side
• Boiler plants, industrial ovens, dryers, and process heating systems
• Applications requiring precise air/fuel ratio control to optimize combustion efficiency