VGD40.040 Siemens Gas Valve

Overview

The Siemens VGD40.040 is a high-performance double gas valve body designed for use in gas trains for industrial and commercial burners. This normally closed valve consists of two safety shut-off valves in series within a single compact housing. It is engineered to work in conjunction with Siemens SKP series electro-hydraulic actuators to provide critical safety shut-off, gas pressure regulation, and air-gas ratio control. The modular design allows for flexible configurations, reducing the overall size and weight of the gas train.

Features

• Compact double-valve design integrates two safety shut-off valves in one unit
• Patented double seat construction with individual closing springs for each seat to ensure reliable shut-off
• High flow capacity achieved through double-seated valve architecture
• Integrated stainless steel mesh strainer at the inlet to protect seats and downstream components from debris
• Dual stem guides ensure precise disc alignment and tight shut-off
• Slow-opening and rapid-closing operation when used with SKP actuators
• Support for pressure switch or valve proving device mounting on integrated plates
• Durable die-cast aluminum body with stainless steel stems and nitrile rubber seals

Specifications

• Model: VGD40.040
• Nominal Size: DN40 (1-1/2 inch)
• Connection Type: Flanged (requires AGF10 connecting flanges)
• Maximum Operating Pressure: 1000 mbar (100 kPa / 14.5 psi)
• Flow Rate: 85 m3/h (at delta p = 1 kPa)
• Gas Families: Suitable for gas families I, II, and III
• Test Points: Includes 1/4 inch NPT pressure taps
• Pilot Gas Port: G 3/4 inch connection
• Approvals: CE, UL listed, FM approved, CSA certified, and ISO 9001/14000 certified

Applications

• Industrial and commercial gas-fired combustion plants
• Gas trains for forced draft gas burners
• Safety shut-off valve systems (when paired with SKP15 actuators)
• Gas pressure regulation and air-gas ratio control (when paired with SKP25, SKP55, or SKP75 actuators)
• Suitable for use in high-demand burner cycles in HVAC and boiler systems