Balancing valve DN125, FIG.447 447A125C72

Balancing Valve for Precise Flow Regulation

The balancing valve Fig. 447 is a reliable device designed for precise hydraulic regulation in installations, ensuring optimal distribution of heat or cooling. The valve’s design enables initial setting, flow measurement, and complete medium shut-off. It performs excellently in both new installations and during modernization of existing heating or cooling systems.

The valve is manufactured from cast iron (Material grade: GG 25 (GJL-250)), guaranteeing strength and corrosion resistance. It features flanged connections (Connection 1: Flange, Connection 2: Flange) compliant with EN 1092-2 standard, facilitating easy installation and integration with existing infrastructure. Installers appreciate the speed and simplicity of installation, while end users benefit from trouble-free operation.

Characteristics and Applications

The Fig. 447 valve is designed for operation within a temperature range of -10°C to +120°C and at a nominal pressure of PN 16. Its design, based on a tilted-body butterfly valve principle, ensures precise flow regulation. A Kvs value of 285.1 (for DN125) enables effective flow control in medium and large-scale systems. Operation is performed via a manual handwheel, providing intuitive and direct control over the regulation process.

These valves are widely used in central heating, air conditioning, ventilation, and industrial systems requiring precise hydraulic balancing. Their compatibility with other valves makes them a versatile component in any system.

Advantages and Design Features

• High tightness: Leak class A per EN 12266-1 ensures minimal medium loss and safe operation.
• Durable construction: Cast iron construction provides excellent corrosion resistance and long-term reliability.
• Easy installation: Flanges machined to EN 1092-2 and ANSI Class 125 standards simplify integration with various pipe systems.
• Precise regulation: Butterfly valve design ensures accurate control of medium flow.
• Versatility: Suitable for use in heating, cooling, and industrial systems.
• Compact design: Reduced dimensions allow installation even in confined spaces.
• Safety: Complies with environmental safety requirements and has undergone testing and certification per EN 12266-1.
• Installation length: Compliant with EN 558 Series 1, facilitating design and replacement of existing valves.

The Fig. 447 balancing valve requires no maintenance under normal operating conditions for its intended use — an additional advantage for users who value convenience and low operational costs.