The auto-flow balance valve is an intelligent valve that integrates flow control and automatic differential pressure regulation, designed for automatic flow control in chillers, boilers, heat exchangers, pumps, fan coil units, cooling towers, and hot water supply systems. Its core function is to ensure that each branch of the system maintains the set flow rate under varying operating conditions, achieving hydraulic balance within the system. The auto-flow balance valve can maintain constant flow rates in water systems within normal working pressure differential ranges, contributing to energy efficiency and reduced system losses, while playing a critical role in enhancing system stability.
Taloar auto-flow balance valves are available in the following two models: T320 and W500-D.
Working Principle
When system pressure fluctuates within working differential pressure range or when end devices are added or changed, leaving the flow in pipeline remains constant. In case of differential pressure increase, the auto-flow balance valve keeps flow unchanged by narrowing the orifice hole in the cartridge. In case of differential pressure decrease, the orifice hole in the cartridge opens up, leaves the flow remains constant.
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If differential pressure is lower than the lower limit of flow control, the cartridge keeps open fully, allowing flow to change below the rated value.
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If differential pressure is within flow control limits, the cartridge changes its opening enlarged automatically according to differential pressure change, allowing flow precision to remain within ±5% constantly.
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If differential pressure is higher than the upper limit of flow control, the cartridge shrinks completely, with flow area reduced, allowing flow to change above the rated value.
Design Principle
The auto-flow balance valve of Taloar is mainly composed of a shell, a cartridge and a spring. The maximum flow of the cartridge is designed according to different system needs, and is preset prior to delivery.
Each ½"-20" auto-flow balance valve provides with two self-sealing flow and temperature measuring ports (¼" BSPT thread) on top of the shell.
The cartridge with a variable orifices hole is precisely and uniquely designed which automatically regulate the flow area according to the differential pressure change, controlling flow rate is within ±5% designed range. One or more cartridge(s) can be installed inside the shell according to valve size and flow rate. In general, flow measurement is not required on site. Instead, it only needed to verify whether differential pressure is within the given spring range by measurement. Therefore, system testing workload is significantly reduced. Each auto-flow balance regulating valve has name plate with parameters precisely indicating regulated flow rate and differential pressure range.
Advantages
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Precise Flow Control
Error ≤± 5%: Automatically adjust valve opening to maintain a constant set flow rate, regardless of fluctuations in pipeline pressure.
Self-adaptive pressure difference: Stable operation within a 10%–100% pressure differential range, adaptable to complex working conditions.
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Significant Energy Savings
Reduce pump energy consumption by 20%–40%: Eliminate redundant excess flow and minimizes inefficient pump operation.
Reduce thermal waste: Balance energy distribution in heating/cooling systems, preventing localized overheating or overcooling.
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Enhanced System Stability
Eliminate hydraulic imbalance: Resolve the industry-wide issue of “excessive flow at proximal points and insufficient flow at terminal points” in pipeline networks.
Protect sensitive equipment: Prevent damage to precision instruments (e.g., laboratory equipment, data center liquid-cooled cabinets) caused by flow surges.
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Reduced Operational Costs
Zero manual adjustment: Set once for lifetime maintenance-free operation, lowering manual inspection costs.
Extend equipment lifespan: Stabilize flow to reduce pipeline vibration and minimize wear on valves and pumps.
Taloar ductile iron wafer-type auto-flow balance valves can automatically maintain the flow of water systems constant within normal working differential pressure range, which does not require field or site commissioning. The shell is coated with epoxy resin. Measuring ports on both ends enjoy good self-sealing performance. High-precision valve core ensures correct and persistence of constant flow.
Application
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HVAC Systems
Eliminate uneven heating/cooling and enhance end-user comfort.
Reduce redundant pump head requirements.
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District Energy Stations
Balance hydraulic imbalances in heating/cooling networks.
Decrease start-stop cycles of make-up pumps in thermal substations.
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Data Center Liquid Cooling
Ensure precise coolant distribution to server cabinets.
Prevent localized overheating and mitigate downtime risks.
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Medical Cleanroom Engineering
Maintain constant positive pressure differentials in operating rooms.
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Smart Agricultural Irrigation
Achieve uniform water supply in drip irrigation networks.
Improve water-saving efficiency by over 50%.
Installation
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Before installing auto-flow balance valves, please read the following notes carefully to prevent function failure due to improper installation causing impairing operating effect of the system.
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Flush and clean pipelines thoroughly before installation to ensure pipelines are free from debris, impurities, sand, gravel and other foreign matter. Remove all strainers before cleaning to keep pipelines smooth.
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It is suggested that strainers should be installed at inlets of valves to prevent valves from function failure due to blockage by foreign matters.
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Ensure sufficient space around valves during installation for easy maintenance, measurement and disassembly in the future.
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Check technical parameters required for the valve by referring to those indicated in the nameplate to ensure flow range meets application requirements.
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Ensure water flow direction keeps consistent with the arrow direction indicated in the valve body. Wrong direction will cause system blockage or even system breakdown.
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Do not damage measuring ports and lifting lug (larger than 6") during installation.
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Assign trained and experienced installation workers to ensure smooth installation.
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Make a full inspection after completion to ensure proper installation.
As a professional valve manufacturer, Taloar is dedicated to offering its customers the highest quality auto-flow balance valve products on the market. Should you have any special customized products, please contact us.
If you need to keep up with innovations and technological advancements in auto-flow balance valves, Taloar will support you! For more details, please contact sales@taloar.com or WhatsApp 008618112507128.
