Valmet Nelprof™ Intelligent Valve Sizing and Selection Software

Nelprof™ is Valmet’s advanced valve sizing and selection software, designed to optimize control and on-off valve performance across a wide range of industrial applications. Free to use and accessible via web browser, Nelprof™ combines decades of real-world experience with modern engineering standards to help users select the most suitable valve, actuator, and controller configuration for any process scenario.

At its core, Nelprof™ performs control performance analysis to ensure valves are not only correctly sized but also capable of delivering precise control in closed-loop systems. It supports sizing for liquid, gas, and multiphase flows, and includes predictive tools for noise, cavitation, flashing, and erosion, based on the latest ISA and IEC standards.

Key Features:

• Control Valve Sizing Module: Includes flow sizing, noise prediction, cavitation analysis, and controllability evaluation.
• Actuator Selection: Advanced sizing with adjustable safety factors and torque calculations for both control and on-off valves.
• SIL Calculations: Integrated module for final element PFD (Probability of Failure on Demand) analysis, supporting 1oo1 and 1oo1D configurations, including pneumatic components and diagnostics (e.g., Neles ValvGuard™).
• On/Off Valve Selection: Supports metal- and soft-seated valves with simplified actuator matching.
• User-Friendly Interface: All relevant parameters are visible and editable, allowing for quick revisions and efficient engineering workflows.
• Secure and Accessible: Browser-based platform ensures data security and easy access from anywhere.

Nelprof™ helps avoid common sizing mistakes such as oversizing, which can lead to poor control and increased raw material losses. By refining valve selection with performance-based insights, it ensures compatibility across Valmet’s valve portfolio—including Neles™, Jamesbury™, and Easyflow™ brands—and supports fast, reliable automation.

Whether you’re designing a new system or optimizing an existing one, Nelprof™ empowers engineers to make informed decisions that enhance process efficiency, safety, and reliability.