IEC EN 60534-2-2 Industrial Process Control Valves - Sizing Test for Liquid Flow

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of IEC EN 60534-2-2 testing. This part of Part 2 covers equations suitable for use in sizing industrial process control valves when the flowing medium is compressible fluids.

At very low pressure differential ratios to absolute inlet pressure (∆p/p1), compressible fluids behave similarly to incompressible fluids.

Under these conditions, the sizing equations presented in this chapter can be traced back to the fundamental Bernoulli equation for Newtonian incompressible fluids. However, increasing ∆p/p1 values ​​result in compressibility effects that require modification of the basic equations with appropriate correction factors. The equations presented are for use with gas or steam and are not designed for use with multiphase flows such as gas-liquid, vapor-liquid or gas-solid mixtures.

In many industrial applications, control valves are installed using a variety of pipe fittings that attach to the connections upstream and downstream of the valve. These fittings generally have a noticeable reduction effect on the valve sizing factor under installation conditions; To account for these effects, it is necessary to introduce a correction factor.

EUROLAB assists manufacturers with IEC EN 60534-2-2 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.