Loop Systems
Loop systems are essential to heating, cooling and process operations across commercial and industrial facilities. They fall into three main categories: open, closed and condenser water loops.
Open loops are primarily used for air conditioning or refrigeration and circulate water through the system. Closed loops are used for air conditioning, heating or HVAC systems. These loops can circulate water, gas or glycol through the system. Condenser Water Loops are typically hybrid systems that include cooling towers and chillers. They’re open to the atmosphere but connected to closed loops in chillers or heat exchangers. All of these systems rely on clean, properly balanced water to operate efficiently.
HOW ARE LOOP SYSTEMS TREATED
Water is continuously recirculated through a loop system. Because of how they operate, these loops must be treated. Without treatment, loop systems face issues like corrosion, scale, biofouling and equipment wear.
Bypass filter feeders in HVAC and loop systems play a crucial role in maintaining system efficiency and longevity. They help remove debris, particulates and contaminants from circulating water without interrupting the main flow and are used to introduce the appropriate treatment chemical into these systems.
UNDERSTANDING BYPASS FILTER FEEDERS IN HVAC & LOOP SYSTEMS
Bypass filter feeder are side-stream filtration devices used in open-loop and closed-loop systems to filter out contaminants such as dirt, rust, scale and biological growth. They enhance system efficiency and reduce maintenance costs. The feeders allow a set amount of a treatment chemical to be introduced into the water without having to use a chemical pump. The water pump will pick up the chemicals from the feeder and dispense it throughout the system. A 5 micron filter bag inside the bypass filter feeder will collect contaminants in the water as it passes through. We recommend that this filter bag be changed at least once a month.
​​APPLICATIONS AND BENEFITS OF BYPASS FILTER FEEDERS
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Bypass filter feeders are used in a variety of water treatment systems to support performance and reliability. In HVAC cooling towers, they help prevent scaling, corrosion, and biological fouling. In chilled and hot water loops, they improve water quality and enhance heat exchange efficiency. Boiler systems benefit from reduced sludge buildup and improved thermal efficiency, while process water filtration in industrial settings relies on bypass feeders to maintain clean and consistent water circulation.
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​These devices offer several important advantages. They extend equipment life by minimizing wear on pumps, valves, and heat exchangers. They also improve energy efficiency—cleaner water enables better heat transfer, which reduces overall energy consumption. With less fouling and clogging, systems experience fewer disruptions, leading to lower maintenance costs. Lastly, bypass feeders enhance water treatment effectiveness by supporting precise chemical dosing and maintaining balanced water chemistry.
