VGD40.150U Siemens Gas Valve

Overview

The Siemens VGD40.150U is a high-capacity, normally closed double gas valve designed for use in commercial and industrial burner applications. This modular double-body valve consists of two safety shut-off valves in series, engineered to provide reliable gas flow control when paired with Siemens SKP series electro-hydraulic actuators. The 6-inch ANSI flanged design is built for high-demand systems, offering a compact solution that can perform multiple functions—including safety shut-off, pressure regulation, and air-gas ratio control—within a single unit, thereby reducing the size and complexity of the gas train.

Features

• Double-valve body construction featuring two safety shut-off valves in series for enhanced safety
• Patented seat construction with individual closing springs for each seat to ensure reliable shut-off
• High flow capacity achieved through double-seated valve design
• Integrated stainless steel mesh inlet filter to protect valve seats and downstream components from contamination
• Dual stem guides to ensure precise disc alignment and tight shut-off
• Compatibility with all SKP series actuators, which can be mounted while the valve is under pressure
• Equipped with 1/4-inch NPT pressure taps on the inlet, outlet, and between main valves for easy monitoring

Specifications

• Model: VGD40.150U
• Connection Size: 6-inch ANSI Flange (DN150)
• Body Material: Die-cast aluminum
• Maximum Operating Pressure: 10 psi (700 mbar)
• Close-off Pressure: 30 psi
• Capacity: 17,490 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 66 lbs to 70 lbs

Applications

• Safety shut-off valve for industrial and commercial gas-fired burners
• Gas pressure regulation and air-gas ratio control when combined with specific SKP series regulating actuators
• Suitable for use with natural gas, propane, butane, air, and other non-corrosive gases
• Ideal for high-capacity gas trains where space-saving modular components are required