Overview
The Siemens VGG10.804U is a high-performance, single-body gas valve designed for use in commercial and industrial burner applications. This 3-inch NPT threaded valve is typically paired with Siemens SKP series electro-hydraulic actuators to provide essential functions such as safety shut-off, gas pressure regulation, and air-gas ratio control. Constructed from durable cast iron, it is engineered to withstand demanding environments while ensuring precise control over gas flow and maximizing combustion efficiency.
Features
- Normally closed, two-port valve design for reliable safety shut-off
- Integrated stainless steel mesh filter protects the valve seat and downstream components from contamination
- Dual stem guides ensure precise disc alignment and a tight seal
- Contoured valve disc provides smooth gas release and stable regulating control
- Actuator can be mounted or replaced while the valve is installed and under pressure
- Equipped with 1/4-inch NPT pressure taps on both inlet and outlet for easy monitoring
Specifications
- Model: VGG10.804U
- Connection Size: 3-inch NPT threaded
- Body Material: Cast iron
- Maximum Operating Pressure: 10 psi (600 mbar)
- Close-off Pressure: 25 psi
- Capacity: 6,158 CFH (Natural gas at 1-inch W.C. pressure drop)
- Permissible Gas Temperature: 5 F to 140 F (-15 C to 60 C)
- Approvals: UL listed, FM approved, CSA certified, and ISO 9001/14000 certified
- Weight: Approximately 35 lbs
Applications
- Used primarily in gas-fired combustion plants and forced draft burners
- Suitable for use with natural gas, propane, butane, air, and other non-corrosive gases
- Functions as a safety shut-off valve when combined with SKP15 series actuators
- Provides pressure regulation with safety shut-off when used with SKP25, SKP55, or SKP75 actuators
- Ideal for gas trains in large-scale HVAC systems, industrial boilers, and furnace applications


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