VGD40.100L Siemens Gas Valve

Overview

The Siemens VGD40.100L is a high-performance double gas valve designed for use in gas trains for burners and gas-fired equipment. This model features a specialized “left flow” or “inverted” configuration, where the mounting plates for the pressure switch and pilot gas are located on the opposite side compared to the standard VGD40.100. It consists of two safety shut-off valves in series, each utilizing a double-seat design to achieve high flow rates and reliable closure.

Features

• Double-valve body with two safety shut-off valves in series for added redundancy and safety
• Double-seat design per valve to ensure maximum flow capacity
• Patented seat construction with individual closing springs for each seat to ensure tight shut-off
• Inverted mounting plate positions for pressure switches and pilot gas connections
• Integrated stainless steel mesh strainer at the inlet to protect the valve and downstream components from debris
• Modular design allows for the mounting of various Siemens SKP series electro-hydraulic actuators

Specifications

• Model: VGD40.100L
• Connection: 4 inch (DN 100) flanged
• Flow Capacity: Approximately 400 m3/h (air) at dp = 1 kPa
• Valve Type: Normally closed, 2-port
• Certification: CE approved (European version)
• Operating Pressure: Suited for pressure ranges up to 400 mbar or 1000 mbar depending on specific application
• Housing Material: Die-cast aluminum

Applications

• Industrial and commercial gas-fired combustion plants
• Gas trains in connection with forced draft gas burners
• Safety shut-off and control when combined with SKP15, SKP25, SKP55, or SKP75 actuators
• Systems requiring a specific “left-hand” mounting orientation for auxiliary components like pressure switches