VKF41.200C Siemens Valve

Overview

The Siemens VKF41.200C is a high-capacity butterfly valve specifically designed for the proportional control of air and gas flows in industrial combustion systems. This 8-inch (DN200) wafer-style valve is engineered to be mounted between flanges and provides a robust solution for regulating gas trains. Featuring a metallic tight-closing disk and spindle made of stainless steel, it ensures reliable performance and durability. The VKF41.200C is often integrated into larger burner systems and requires a high-torque actuator for precise modulation and automated operation.

Features

• Designed for fitting between counter-flanges (wafer-type) for easy integration into gas trains
• Stainless steel disk and spindle provide resistance to corrosion and wear
• Metallic tight shutoff mechanism limits leakage to less than 0.7 percent of the kvs value
• Maintenance-free design reduces long-term operational costs and downtime
• Accommodates flow in either direction, offering flexibility during installation
• Beveled disk design allows for an 85-degree angle of rotation for precise flow control
• Includes centering sleeves to ensure proper alignment between PN6, PN10, and PN16 flanges

Specifications

• Model: VKF41.200C
• Nominal Size: 8 inches (DN200)
• Nominal Flow Rate (kvs): 4000 m3/h
• Angle of Rotation: 85 degrees
• Operating Pressure: -5 to 20 psig (-35 to 140 kPa)
• Media Compatibility: Air, natural gas, propane, and other clean gases (Families I to III)
• Temperature Range: 0 to 140 F (-18 to 60 C)
• Leakage Rate: Less than 0.7 percent of kvs
• Body Material: Cast iron (EN-GJL-250)
• Disk and Spindle Material: Stainless steel
• Weight: Approximately 19 lbs (8.6 kg)

Applications

• Proportional flow control in gas trains of industrial and commercial burners
• Regulation of air or gas volume in high-capacity combustion plants
• Integration into boiler systems and large-scale HVAC units for energy-efficient modulation
• Suitable for use with various gas types including natural gas and propane
• Compatible with Siemens SQM actuators (such as SQM5x, SQM40, or SQM33 series) via specific mounting kits for automated burner management systems