VGD40.150L Siemens Gas Valve

Overview

The Siemens VGD40.150L is a high-capacity, 6-inch (DN150) flanged double gas valve designed for integration into gas trains. It consists of two safety shut-off valves in series within a single compact body, providing a space-saving solution for industrial and commercial burner systems. This specific “L” version features an inverted position for the mounting plates of the pressure switch and pilot gas plate, typically designed for left-side flow configurations. When combined with Siemens SKP series electro-hydraulic actuators, it provides safety shut-off, gas pressure regulation, or air-gas ratio control.

Features

• Compact double-valve body reduces the number of components and fittings required in a gas train
• Two safety shut-off valves in series for enhanced safety and reliability
• Patented double-seat construction with individual closing springs ensures high flow and reliable shut-off
• Integrated stainless steel mesh filter protects valve seats and downstream components from debris
• Modular design allows for the mounting or replacement of actuators while the valve is under pressure
• Inverted mounting plate configuration for flexible installation in specific burner piping layouts
• Dual stem guides ensure precise disc alignment and tight shut-off

Specifications

• Model: VGD40.150L
• Nominal Size: 6 inches / DN150
• Connection Type: Flanged (Class 150)
• Flow Rate: Approximately 700 to 800 m³/h air (at Δp = 10 mbar)
• Maximum Operating Pressure: Up to 4 psi (300 mbar)
• Operating Temperature: 14°F to 140°F (-10°C to 60°C)
• Approvals: CE approved, UL listed, FM approved, and CSA certified
• Weight: Approximately 70 lbs (32 kg)
• Dimensions: Approximately 24 x 24 x 12 inches

Applications

• Gas-fired combustion plants and industrial burners
• Gas trains in connection with forced draft burners
• Safety shut-off and control for gas families I through III (natural gas, propane, butane, and air)
• Use in HVAC systems requiring precise pressure regulation and safety shut-off functions
• Suitable for high-demand industrial process equipment and commercial heating systems