SKP75.012U1 Siemens Actuator

Overview

The Siemens SKP75.012U1 is an electro-hydraulic actuator designed for use with Siemens VG series gas valves. It serves as a safety shut-off valve, pressure regulator, and air/gas ratio controller in a single compact unit. This modular actuator is engineered to control the burner manifold gas pressure as a function of combustion air pressure, eliminating the need for a separate constant gas pressure regulator. It is ideal for industrial and commercial burner applications, providing precise control and rapid fail-safe closure.

Features

• Combined safety shut-off, pressure regulation, and air/gas ratio control
• Integrated Proof of Closure (POC) over-travel switch and an adjustable auxiliary switch
• Adjustable gas-air ratio from 0.4:1 to 9:1 with visible setting window
• Automatic compensation for combustion chamber back pressure fluctuations
• Quick-connect wiring terminals and 360-degree actuator rotation for flexible installation
• Visual position indicator and “power on” indication light
• Low power consumption (typically 10 to 13.5 VA)
• Fast closing time of less than 0.8 seconds for safety

Specifications

• Model: SKP75.012U1
• Operating Voltage: 110/120 Vac (50/60 Hz)
• Output Force: 100 lb (450 N)
• Maximum Stroke: 1 inch (26 mm)
• Opening Time: 6 to 14 seconds (depending on valve size)
• Closing Time: < 0.8 seconds
• Protection Rating: IP54 (NEMA 1, 2, 5, 12; NEMA 4 with AGA66 gasket)
• Weight: Approximately 5.1 lb (2.3 kg)
• Approvals: UL listed, FM approved, CSA certified

Applications

• Industrial and commercial burner systems
• Boilers, ovens, and dryers
• Process heating equipment
• Premix burner applications requiring precise air/gas ratio control
• Gas trains where space and weight reduction are prioritized by combining multiple functions into one valve assembly