Tag: frequently asked questions

Introduction One of the most frequent causes of pipeline failure in municipal water and wastewater infrastructure is not structural weakness of the pipe itself, but rather the mismanagement of entrained air and vacuum conditions. A startling number of force main bursts and transmission line collapses can be traced back to improper sizing, placement, or selection […]

Introduction to VAG Flow Control Technologies One of the most persistent challenges in municipal and industrial water infrastructure is the management of high-energy water streams without inducing catastrophic mechanical failure. Engineers frequently underestimate the destructive power of cavitation and water hammer, leading to premature valve degradation and pipeline ruptures. Within the global water sector, VAG […]

Introduction In the hierarchy of water and wastewater treatment plant assets, the electric valve actuator is often treated as a commodity—a “black box” expected to turn a valve stem upon command. However, incorrect specification or selection between major OEMs can lead to catastrophic process failures, unmanageable maintenance burdens, and integration nightmares. For decades, two manufacturers […]

Introduction One of the most persistent challenges in municipal and industrial fluid control is ensuring process safety during a catastrophic power loss. For decades, engineers relied heavily on mechanical spring-return mechanisms or complex hydraulic systems to force valves into a safe position when the grid went down. However, as automation complexity increases and space constraints […]

Introduction In the modern wastewater treatment landscape, the “ragging” phenomenon has evolved from a nuisance into a critical operational crisis. With the proliferation of non-dispersible synthetic wipes and fibrous materials entering collection systems, the reliable operation of downstream pumps, heat exchangers, and centrifuges hangs in the balance. For engineers and operators, the failure of a […]

Introduction The interface between a valve and its control mechanism remains one of the most frequent points of failure in modern water and wastewater treatment plants. A surprising industry statistic suggests that nearly 60% of “valve failures” are actually actuation or interface failures—issues with sizing, mounting, signal loss, or power delivery—rather than a failure of […]

Introduction In municipal water distribution and wastewater treatment, the isolation valve is the most critical yet frequently overlooked asset. Industry data suggests that up to 20% of installed gate valves in North America are inoperable or pass water when isolation is attempted during an emergency. For the consulting engineer or utility director, the choice of […]

Introduction The operational resilience of a wastewater treatment plant or lift station is often determined not by its pumps, but by the equipment protecting them. With the rise of “flushable” wipes and non-dispersible textiles entering municipal collection systems, the phenomenon of ragging has transitioned from a nuisance to a critical operational failure mode. Industry data […]

Introduction In the municipal wastewater sector, a single incorrect valve specification can lead to catastrophic ragging, seized actuation, and thousands of dollars in unscheduled maintenance. Engineers often default to “tried and true” manufacturers, but nuances in product lines and specification details can obscure the best choice for specific hydraulic conditions. A frequent point of discussion […]

Introduction In the design of municipal wastewater treatment plants and pumping stations, the eccentric plug valve serves as the workhorse for isolation and throttling of sludge, slurry, and raw sewage. However, a persistent challenge for consulting engineers is navigating the specific mechanical nuances between major manufacturers. Often, specifications are copied from previous projects without a […]