Siemens VRF Gas Valves

Siemens VRF gas valves are safety shut-off valve bodies designed for use in industrial combustion systems operating with special gases and alternative gaseous fuels. They are specified where system design requirements or fuel characteristics differ from standard natural gas applications.

VRF valves form part of Siemens’ combustion safety range and are used as safety shut-off components within gas trains serving industrial burners, boilers, and process heating equipment. They are designed to operate in combination with Siemens SKP actuators as part of a complete combustion safety system.

Typical Applications

• Industrial combustion systems using special gases
• Installations where fuel properties differ from standard natural gas
• Process heating equipment requiring dedicated safety shut-off valves
• Gas trains designed for non-standard fuel applications

Valve Design and Safety Function

Siemens VRF valves are designed to provide reliable safety shut-off in combustion systems where alternative or special gases are used. The valve body construction and sealing arrangement support stable operation under operating conditions that may not be suitable for standard gas valve designs.

VRF valves are not control or proportioning valves. They are intended to provide primary gas isolation within the gas train and must be combined with appropriate safety controls and actuators.

Siemens VRF valves are designed for use with Siemens SKP actuators. The selected actuator defines the functional behaviour of the valve, including shut-off operation and any associated control features.

Compatible Siemens SKP Actuators

Siemens VRF gas valves are commonly used in combination with the following Siemens SKP actuators:

• SKP15 – Safety shut-off (ON/OFF)
• SKP25 – Safety shut-off with pressure regulation
• SKP55 – Safety shut-off with differential pressure air–gas ratio control
• SKP75 – Safety shut-off with adjustable air–gas ratio control

Correct actuator selection is essential to ensure compatibility and to maintain safe and compliant operation of the combustion system.

Available Valve Sizes and Specifications

The Siemens VRF range is available in a selection of valve sizes and configurations to suit different combustion system requirements. Detailed technical specifications for each VRF valve model, including pressure ratings and materials, are provided within the individual product listings below.

Replacement and Selection Guidance

When replacing an existing Siemens VRF gas valve, the full model number shown on the valve rating plate should always be matched. Valve size, pressure rating, and actuator compatibility must be confirmed to ensure correct fitment and safe operation.

If you are unsure whether a VRF valve is suitable for your application, or if an alternative Siemens valve family may be required, technical confirmation is recommended before ordering.

Related Siemens Components

• Siemens SKP gas valve actuators
• Siemens pressure switches
• Siemens burner and flame control equipment