VKF41.80H-MH Siemens Valve

Overview

The Siemens VKF41.80H-MH is a 3-inch high-temperature butterfly valve specifically designed for the precise control and regulation of hot air or flue gas recirculation. This wafer-type valve is engineered to be mounted between pipe flanges and features a metallic tight-closing disk for reliable shut-off. This specific model includes a manual handle (MH) kit, allowing it to function as a manual flow restrictor with a locking mechanism and position indicator, providing versatile operation in demanding combustion environments.

Features

• Designed for high-temperature media including hot air and flue gas recirculation
• Metallic tight-closing disk ensures minimal leakage (typically less than 0.7%)
• Bidirectional flow capability allows for flexible installation in various piping configurations
• Manual handle kit (MH) includes a position indicator and clamping pieces to lock the valve in any position
• Durable construction with a grey cast iron body and stainless steel disk and shaft
• Maintenance-free design for reduced long-term operating costs
• Compatible with automated Siemens actuators if manual operation is no longer required

Specifications

• Model: VKF41.80H-MH
• Nominal Size: DN80 (3 inch)
• Maximum Temperature: 550 degrees F (288 degrees C)
• Maximum Operating Pressure: 5 to 20 psig (depending on application)
• Flow Capacity (kvs): 400 m3/h
• Angle of Rotation: 360 degrees (for H versions)
• Housing Material: Grey cast iron (EN-GJL-250)
• Disk and Shaft Material: Stainless steel
• Mounting Style: Wafer type for fitting between PN6, PN10, or PN16 flanges

Applications

• Flue gas recirculation (FGR) systems in industrial boilers
• Hot air flow control and regulation in combustion plants
• Manual flow restriction and adjustment in gas trains
• High-temperature air handling in HVAC and industrial heating processes
• Use as a shut-off or proportional control valve in closed-loop systems