Topic Summary: Retrofit Pump Selection and Drop-In Replacement Engineering for Municipal Pumping Stations
This session provided by UnitedFlo covers the engineering behind replacing pumps in existing municipal stations. Topics include how replacement pumps are sized and selected from real operating data rather than original design points; what true dimensional and hydraulic interchangeability requires so that piping, mounting and electrical systems remain untouched; and how modern design tools — 3D laser scanning of the existing installation and computational fluid dynamics (Ansys CFX) — are used to verify head, efficiency and NPSH before manufacturing. Examples are drawn from recent drop-in replacement projects for legacy pump brands in municipal wastewater, raw water and clean water service. Approximately 60–90 minutes including discussion, adjustable to the allotted window.
Speakers:
Rade Trninich — Principal & Founder, United Flo LLC
Jason Sexton — Chief Technical Officer, United Flo LLC
Katarina Trninich — Sales & Marketing, United Flo LLC
EJ Bukowsk – Industrial Sales Engineer, Gasvoda & Associates, Inc.
Learning Objectives
Upon completion of this session, attendees will be able to:
• Explain why replacement pump selection should be based on measured station operating dataand an as-found system curve rather than original design conditions.
• Identify the five interfaces — dimensional, hydraulic, piping, mounting and electrical — thatmust be verified for a replacement pump to install without station modifications.
• Describe how 3D laser scanning is used to capture an existing mounting envelope and how CFDanalysis verifies head, efficiency and NPSH prior to manufacture.
• Evaluate a proposed retrofit selection against best efficiency point, suction margin at runout,and existing electrical service limits.
Speaker Bios
Rade Trninich — Principal & Founder, United Flo LLC
Since 1995, Rade has worked for several pump companies, starting on the shop floor and working his way up through management, building his career in pump development with hands-on experience at both the machinist and engineering level. He went on to found his own pump company — United Flo — where that shop-floor-to-management perspective drives an approach to replacement pumping that many in the industry have since followed. His main focus is building close relationships with sales partners and growing the company around providing a solution rather than just a pump. an expert in all stormwater solutions.
Jason Sexton — Chief Technical Officer, United Flo LLC
Jason is United Flo’s head engineer, with 30 years as a pump engineer at many of the industry’s major pump companies. He pioneers United Flo’s new pump designs and leads the expansion of the product line, ensuring the hydraulics behind every selection are accurate to the application. He coordinates and works with the broader engineering team to finalize each pump design, from CFD modeling in Ansys CFX through specifications and submittals.
Katarina Trninich — Sales & Marketing, United Flo LLC
Katarina handles sales, marketing and outreach for United Flo. She manages quotes and submittals and serves as the link between engineering and the front end of the sale — advising owners and engineers on how to proceed with a pump replacement or a new project.No cost to attend in the spirit of collaboration among the following professional societies: APWA City Branch, ISPE, and the City of Chicago.
Due to JWPP security protocols, you MUST be registered by Wednesday, September 18th at noon. You must bring a State Issued I.D. to gain entry into the Jardine Facility. Talks start promptly at noon, so please arrive 15 minutes before to account for getting through security.
Presentation starts promptly at noon. Food will be provided. |
