Siemens Double Gas Valves VGD20 VGD40 VGD41 Series

Siemens Double Gas Valves VGD20 / VGD40 / VGD41 Series

Siemens Double Gas Valves VGD20, VGD40 and VGD41 Series are double gas valves designed for industrial gas burners, boiler systems and gas-fired combustion equipment. These valves provide reliable gas shutoff and can be combined with Siemens SKPx5 actuators for gas pressure and combustion control applications.

When combined with the specified SKPx5 actuators, the valves provide Class A safety shutoff functionality according to EN 161. They feature slow-opening and rapid-closing operation, supporting the safety requirements of industrial gas combustion systems.

Key Features

• Double gas valve design for industrial burner and gas train applications.
• Class A safety shutoff functionality according to EN 161 when combined with SKPx5 actuators.
• Slow-opening and rapid-closing operation.
• Compatible with Siemens SKP15, SKP25, SKP55 and SKP75 actuators.
• Supports ON/OFF operation and various gas pressure control functions, depending on the actuator.
• Integrated stainless steel strainer for protection against dirt particles.
• Available in connection sizes from 1 inch to DN150.
• Suitable for gas trains and forced-draft gas burner systems.

Product Series

Siemens VGD20 Series

The Siemens VGD20 Series consists of compact double gas valves for industrial gas applications. The valves use AGF10 threaded connecting flanges, with two flanges required per valve. They are suitable for gas burner systems requiring dependable safety shutoff functions.

Siemens VGD40 Series

The Siemens VGD40 Series features flanged double gas valves designed for industrial gas-fired combustion systems. Available in nominal sizes from DN40 to DN150, these valves provide connection options for gas pressure monitoring and valve proving devices.

Siemens VGD41 Series

The Siemens VGD41 Series belongs to the VGD4x double gas valve family. Available in nominal sizes from DN40 to DN150, these valves can be combined with Siemens SKPx5 actuators for gas shutoff and pressure control. Selection should be based on the required gas flow, operating pressure and control configuration.

Compatible Siemens Actuators

• SKP15: ON/OFF valve operation.
• SKP25: ON/OFF operation with constant or zero pressure control.
• SKP55: Differential pressure control.
• SKP75: Fuel/air ratio control.

Typical Applications

• Industrial boiler systems
• Industrial gas burners
• Combustion control systems
• Industrial gas-fired heating equipment
• Gas trains for forced-draft burners

Product Selection Considerations

Valve selection should consider the exact model number, gas type, nominal connection size, operating pressure, required flow rate and compatible actuator configuration.

Each double gas valve requires two Siemens SKPx5 actuators. A suitable valve proving system is strongly recommended to support safe operation. Installation and servicing must be performed by qualified personnel in accordance with applicable regulations and Siemens instructions.