Overview
The Siemens VOG15.012U1 is an electro-hydraulically actuated oil safety shut-off valve designed for industrial and commercial burner applications. This 3/4-inch valve serves as a versatile 2-way or 3-way component, featuring a normally closed port for safety shut-off and a normally open bottom port typically used for the recirculation of heavier oils. The unit is equipped with a high-performance actuator that opens slowly upon power application and closes rapidly in less than one second when power is interrupted, ensuring immediate safety in critical situations. This specific model includes a Proof of Closure (POC) switch and an adjustable auxiliary switch to provide enhanced monitoring and control within a combustion system.
Features
- Combined Proof of Closure (POC) and adjustable auxiliary switches for advanced status signaling
- Electro-hydraulic operation provides slow opening and fast shut-off (less than 1 second)
- Visual position indicator and power-on light integrated into the actuator cover
- Versatile 2-way or 3-way configuration with included NPT pipe plug for conversion
- Watertight design (NEMA 4) when mounted in a vertical position
- Actuator can be rotated 360 degrees for flexible field wiring and installation
- Low power consumption of approximately 20 VA during operation
- Durable construction with a forged brass valve body and stainless steel stem and seat
Specifications
- Model Number: VOG15.012U1
- Connection Size: 3/4 inch NPT (includes 1/2 inch hardware kit/bushings)
- Operating Voltage: 110/120 VAC (50/60 Hz)
- Maximum Operating Pressure: 300 PSIG
- Maximum Oil Temperature: 300 F
- Oil Viscosity: Suitable for #2, #4, and #6 oil up to 5000 SSU
- Flow Capacity (Cv): 4.4 for a single valve
- Ambient Temperature Range: 15 F to 140 F
- Agency Approvals: UL listed, FM approved, CSA certified
Applications
- Safety shut-off control for commercial and industrial oil burners
- Recirculation of heavy fuel oils in 3-way piping configurations
- Use in HVAC systems requiring reliable oil flow interruption
- Integration into complex burner management systems where proof of closure and auxiliary signaling are required
- Suitable for various mounting positions, excluding upside-down installations


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