Colorado Springs, CO - July 16, 2024 -- Applied Flow Technology will join hundreds of fellow engineers at the American Society of Mechanical Engineers to discuss Pressure Vessel & Piping technologies and the latest advancements. 

AFT will be joined by Mokveld Valves, one of our co-authors, at the conference and will be available in our exhibit hall booth. 

Pressure Vessels & Piping Conference

July 28 – August 2, 2024

Bellevue, WA, USA

AFT will present two technical papers at the ASME Pressure Vessels & Piping Conference. One paper will take a deep dive into sonic chocking, and the other will examine check valves and relief valves. 

A Comprehensive Discussion Of Sonic Choking In Pipe Systems For Steady, Compressible Flow

Understanding and predicting sonic choking in pipe network systems can be critically important. Among the reasons is to ensure safety and to improve the performance of the system. In some cases, sonic choking is the dominant aspect of the system behavior and there is no way to understand the system without understanding sonic choking and where it occurs. However, sonic choking is (in general) poorly understood and (at best) incompletely documented in the literature. The literature often provides misleading examples built on unstated (and unrealistic) assumptions. Some situations where sonic choking occurs are almost completely ignored in the literature.

The purpose of this paper is to provide a comprehensive reference for practicing engineers for all possible sonic choking behavior in any generalized, pipe network system with superheated, steady-state, single-phase gas flow. Discussions include multiple choking points in series and in parallel, as well as in systems with real gas behavior experiencing heat transfer in non-horizontal pipes.

Check Valves and Relief Valves in Unsteady Flow: Can These Ubiquitous Devices Pose a Threat to Your System?

Check valves intend to prevent reverse flow with minimal impact to normal forward flow. They respond to transient conditions, and improper selection can result in unmitigated check valve slam – causing massive transient pressure surge that can easily cause damage throughout the connected piping network.

Dynamic characteristics show the dependence of closure velocity on fluid deceleration. This paper aims to clarify, summarize, and qualify the use of these curves in liquid flow. Computer simulation models and examples are described along with com-parisons to field data. Basic design principles, guidelines for identifying at-risk systems, and strategies for check valve selection are presented.

The ASME PVP Conference is the ideal platform to keep up with new technologies, network and interact with experts, practitioners, and peers in the Pressure Vessels & Piping area.

The PVP Conference is a recognized international forum with participants from more than 40 countries in Europe, Africa, the Middle East, Asia, the Americas and the Oceania islands. The ASME Pressure Vessels & Piping Division sponsors the PVP Conference with participation by the ASME NDPD Division.