The Siemens VXF43.125-250 three-port flanged control valve from the ACVATIX™ range is a high-performance, long-stroke valve designed for controlling the flow of liquids in heating, cooling and air handling systems. The valve body is made of EN-GJS-400-18-LT nodular cast iron, while the stem, seat and plug are made of stainless steel. The valve is designed for nominal size DN 125, with a nominal flow rate of Kvs 250 m³/h and pressure rating PN 16.

Applications

• Boiler houses and plant rooms in district heating systems
• Cooling plant rooms and cooling towers (open circuits)
• Heating networks and AHUs
• Closed and open hydraulic circuits (with cavitation taken into account)
• As a control or shut-off valve for liquids

Compatible media

• Cold, warm and hot water (up to 220 °C)
• Water with antifreeze additive (from −5 °C, or from −20 °C after replacing the gland packing)
• Brines (from −5 °C, or from −20 °C after replacing the gland packing)
• Cooling water (open circuits)
• Mineral oil-based heat transfer oils (20 … 220 °C)