VKF41.150C-MH Siemens Valve

Overview

The Siemens VKF41.150C-MH is a high-performance 6-inch (DN150) flanged butterfly valve designed primarily for the precise control of gas and air flow in industrial combustion systems. This wafer-type valve is engineered to be mounted between PN6, PN10, or PN16 counter-flanges. The “-MH” suffix indicates that this specific model comes equipped with a manual handle kit, which includes a position indicator and a locking mechanism, allowing it to function as a manual flow restrictor. While it includes a manual handle, the valve’s design also allows for future automation by mounting Siemens SQM or SAL series actuators using compatible mounting kits.

Features

• Metallic tight-closing design with a leakage rate of less than 0.7% of the kvs value
• Versatile mounting compatibility between ANSI or DIN pipe flanges (PN6, PN10, PN16)
• Includes a manual handle (MH) with a clamping piece to lock the valve in any desired position
• Integrated position indicator to clearly show the orientation of the valve disc
• Durable construction featuring a grey cast iron housing with a stainless steel disk and spindle
• Maintenance-free design suitable for long-term industrial operation
• Bi-directional flow capability for flexible installation

Specifications

• Model: VKF41.150C-MH
• Nominal Size: 6 inches (DN150)
• Flow Capacity (kvs): 2100 m3/h
• Angle of Rotation: 85 degrees (for C-series gas versions)
• Operating Pressure: -5 to 20 psig (-35 to 140 kPa)
• Medium Temperature Range: -20 C to +60 C (-4 F to +140 F) for gas applications
• Housing Material: Grey cast iron EN-GJL-250
• Disk and Spindle Material: Stainless steel
• Protection Rating: IP40 (when automated with specific actuators)

Applications

• Supervision and control of gas families I, II, and III (natural gas, propane, etc.)
• Air flow control in industrial and commercial burner systems
• Use as a manual flow restrictor or throttle valve in gas trains
• Integration into combustion plants for boiler and chiller sequencing
• HVAC applications in closed circuits for chilled or low-temperature hot water systems