VGD40.100 Siemens Gas Valve

Overview

The Siemens VGD40.100 is a compact, DN100 (4-inch) flanged double gas valve body designed for use in gas trains. It consists of two Class A safety shut-off valves in series, engineered to provide high flow rates and reliable shut-off for commercial and industrial burners. This modular valve body is designed to be paired with two Siemens SKP series electro-hydraulic actuators to perform multiple functions, including safety shut-off, gas pressure regulation, and air-gas ratio control, thereby reducing the size and weight of the gas train.

Features

• Double-seat disk design for each valve to achieve maximum flow capacity
• Patented seat construction with individual closing springs for reliable shut-off
• Integrated stainless steel mesh strainer (0.9 mm) at the inlet to protect downstream components from dirt and debris
• Normally closed operation for enhanced safety
• Capable of being fitted or replaced with actuators while under gas pressure
• Die-cast aluminum body construction for durability and weight reduction
• Multiple pressure test points (1/4-inch NPT) for monitoring inlet and outlet pressure

Specifications

• Model: VGD40.100
• Nominal Size: DN100 (4-inch)
• Connection Type: Flanged (ANSI Class 150)
• Flow Rate: 400 m³/h air (at Δp = 1 kPa)
• Maximum Operating Pressure: 10 psi (approx. 700 mbar)
• Close-off Pressure: 30 psi
• Operating Temperature: 14°F to 140°F (-10°C to 60°C)
• Body Material: Die-cast aluminum
• Approvals: CE, UL listed, FM approved, CSA certified

Applications

• Integration into gas trains for forced draft burners
• Industrial and commercial gas-fired combustion plants
• Safety shut-off systems when used with SKP15 series actuators
• Pressure regulation and air-gas ratio control when combined with SKP25, SKP55, or SKP75 actuators
• Suitable for use with gases of gas families I, II, and III (natural gas, propane, butane, and air)