VKF41.65H Siemens Valve

Overview

The Siemens VKF41.65H is a high-temperature wafer-style butterfly valve designed for the precise control and throttling of hot gases. Part of the Siemens VKF41 series, this specific “H” version is engineered to withstand extreme thermal conditions, making it an embodiment of reliability for flue gas recirculation (FGR) and hot air systems. The valve is designed for mounting between standard pipe flanges and features a robust construction that ensures reliable performance in demanding industrial combustion environments.

Features

• High-temperature resistance specifically designed for FGR and hot air applications
• Metallically tight shutoff with a leakage rate of less than 0.7% of the kvs value
• Wafer-style design for easy installation between counter-flanges (PN6, PN10, PN16)
• Bi-directional flow capability allowing for flexible installation in various piping configurations
• 360 degree angle of rotation for the valve disk, providing versatile control options
• Maintenance-free design with durable PTFE seals and bearings for long-term reliability

Specifications

• Model: VKF41.65H
• Size: DN65 (2-1/2 inches)
• Maximum Gas Temperature: 550 F (288 C)
• Body Material: Grey cast iron (EN-GJL-250)
• Disk and Shaft Material: Stainless steel
• Seal and Bearing Material: PTFE (Teflon)
• Nominal Pressure: PN16
• Flow Coefficient (kvs): 200 m3/h
• Angle of Rotation: 360 degrees
• Compatible Actuators: Siemens SQM series (requires mounting bracket) or manual handle (MH) options

Applications

• Flue gas recirculation (FGR) systems in industrial boilers
• Control of hot air flow in combustion processes
• High-temperature gas throttling in HVAC and plant engineering
• Industrial burner systems requiring durable, high-heat resistant control valves
• Used as a control or shut-off valve in closed circuits for high-temperature media