VGD40.150 Siemens Gas Valve

Overview

The Siemens VGD40.150 is a high-capacity, DN150 (6-inch) double gas valve body designed for integration into gas trains for commercial or industrial burners. Engineered as a normally closed, two-way safety shut-off valve, it consists of two valves in series, each featuring a double-seat design to achieve exceptionally high flow rates. When paired with Siemens SKP series electro-hydraulic actuators, the VGD40.150 provides essential safety shut-off functions, and depending on the actuator used, it can also perform gas pressure regulation or air-gas ratio control. Its compact modular design reduces the overall size and weight of the gas train by consolidating multiple functions into a single unit.

Features

• Double-seat configuration for each safety shut-off valve to ensure high flow capacity
• Integrated stainless steel mesh strainer (0.9 mm) at the inlet to protect seats and downstream components from debris
• Patented seat construction with individual closing springs for reliable shut-off and high close-off pressure ratings
• Dual stem guides provide precise disc alignment for consistent, tight shut-off performance
• Modular design allows for the attachment of various pressure switches or valve proving systems
• Valves open slowly and close rapidly (less than 1 second) when used with SKP actuators

Specifications

• Model: VGD40.150
• Nominal Size: DN150 (6 inches)
• Connection Type: Flanged (ANSI or EN versions available)
• Flow Rate: Approximately 700 m3/h air (at Δp = 1 kPa)
• Maximum Operating Pressure: Up to 10 psi (700 mbar)
• Close-off Pressure: 30 psi
• Permissible Temperature Range: 14 F to 140 F (-10 C to 60 C)
• Body Material: Die-cast aluminum
• Protection Rating: IP65 (when used with AGA66 sealing kit)
• Approvals: UL listed, FM approved, CSA certified, and CE marked versions available

Applications

• Forced draft gas burners in commercial and industrial combustion plants
• Gas trains requiring safety shut-off, pressure regulation, or air-gas ratio control
• Suited for use with gas families I, II, and III (natural gas, propane, etc.)
• Ideal for high-demand HVAC systems and large-scale boiler operations where space-saving modularity is required