OverviewThe KPF stainless steel manual balancing valve is a static hydraulic balancing element with specialized functions. It features flow regulation and shut-off capabilities, as well as an opening indicator, a digital locking device, and pressure test ports for connecting differential pressure gauges. Cast from high-quality stainless steel (such as 304/316), this valve is specifically designed for water and industrial fluid systems requiring high media cleanliness and corrosion resistance.By accurately adjusting the valve plug's opening, it effectively eliminates hydraulic imbalance between branch pipes, distributing flow as required, thereby significantly improving system efficiency and reducing energy loss. It possesses excellent flow characteristics for quantitative flow distribution, effectively solving uneven heating/cooling issues in HVAC systems. With its opening indicator, locking device, and small test valves, users can install the appropriate specifications at branch pipes and entry points. After a one-time commissioning with a specialized intelligent instrument and subsequent locking, the system's total water volume is controlled within a reasonable range, overcoming the inefficient phenomenon of "high flow, low temperature differential." It is an ideal product for heating systems. A balancing valve is a valve with specialized functions; while its basic structure is standard, its distinction lies in its functional utility and application scenarios.KPF Stainless Steel Manual Balancing Valve Product Diagram Feature1.Superior Corrosion ResistanceFeature: The body, bonnet, disc, and internal components are all made of 304 or 316 stainless steel.Advantage: Suitable for weakly corrosive chemical media, pharmaceutical, and food industry pipelines, as well as industrial water systems prone to rusting, offering an extremely long service life.2.Precise Opening Indication & Digital LockingFeature: The handwheel is equipped with a high-precision digital scale and a specialized locking tool.Advantage: Commissioning personnel can set the opening accurately based on flow requirements. The locking function ensures that after system maintenance, the valve can be quickly reopened to its original balanced position, preventing unauthorized tampering.3.Integrated Flow Test PortsFeature: The inlet and outlet ends of the valve body are equipped with two self-sealing pressure test ports.Advantage: By connecting an intelligent flow meter (differential pressure gauge), the pressure drop and flow rate can be measured in real-time, making complex system commissioning simple, intuitive, and efficient.4.Equal Percentage Regulation CharacteristicsFeature: The valve disc adopts a specialized tapered design for excellent linear regulation performance.Advantage: Maintains high adjustment precision even at low openings, ensuring the water system remains stable under various loads.5.Dual Function: Regulation & Shut-offFeature: The disc utilizes a PTFE or EPDM soft seal structure for high-grade sealing.Advantage: While regulating flow, it also serves as a shut-off valve. No additional ball or gate valves are needed during system maintenance.6.Full Flow Path DesignFeature: The internal flow path is optimized via fluid dynamics for a large Kv value.Advantage: Effectively reduces local resistance and energy consumption as the medium flows through the valve.

OverviewThe SP45F number lock balance valves are precision-engineered regulators for achieving hydraulic equilibrium in centralized heating, HVAC, and other water systems. Featuring integrated flow indication and digital locking mechanisms, these valves enable technicians to precisely set and mechanically lock flow rates or pressure differentials in each circuit. The SP15F utilizes flange connections for water supply systems, while the SP45F employs threaded connections for return water systems or smaller-diameter pipelines. Their core function is to eliminate thermal imbalances and ensure flow distribution according to design specifications, serving as critical components for energy-efficient and high-performance system operation.SP45F number lock balance valve Product Diagram Feature1. Digital Locking and Scale Indication: The valve features a digital opening locking mechanism and clear scale markings for indicating valve position. After adjustment, the locking device secures the valve stem position, effectively preventing preset value changes caused by vibration or misoperation, ensuring long-term balanced stability of the system.2. Specialized measurement interface and debugging function: The valve body features a standard measurement interface, enabling the use of dedicated smart instruments to quickly measure and display real-time parameters such as flow rate and pressure difference without interrupting system operation. This significantly simplifies both initial system debugging and subsequent inspection and maintenance tasks.3. Exceptional linear regulation and wide adjustment range: The valve core features a scientifically designed flow characteristic curve (e.g., linear or equal percentage), enabling a broad adjustment range. It ensures smooth and precise regulation across the entire flow range from minimum to maximum, meeting the need for fine control under varying loads.4. Excellent shut-off performance and low flow resistance: The valve ensures reliable sealing when fully closed, making it suitable as a loop shut-off valve. When fully open, the optimized flow path minimizes flow resistance, reducing unnecessary system energy consumption.5. High-reliability design: The valve stem features anti-rotation construction to prevent seal wear, while the packing structure ensures reliable performance with zero leakage.

The VSHB static balancing valves are primarily installed in the risers, branch pipes, and terminal units of HVAC systems. Their core function is to accurately preset the maximum flow rate of the pipeline by manually rotating a numeric handwheel in conjunction with a balancing instrument. This process eliminates hydraulic imbalances such as overflow or underflow within the water system, ensuring static hydraulic balance across all branches and enabling the entire HVAC system to operate stably and energy-efficiently.Product Image of VSHB static balancing valvesFeature1.Pressure-Balanced Plug DesignFeature: The plug adopts a pressure-balanced structure, which significantly offsets the axial thrust exerted by the medium pressure on the plug.Advantage: Manual adjustment or operation remains effortless and smooth regardless of system pressure, ensuring higher commissioning accuracy.2.High Flow Coefficient Feature: Optimized internal flow path design provides a higher Kv value.Advantage: Minimizes resistance (pressure drop) at the same flow rate, reducing system energy consumption and achieving building energy savings.3.Precise Numeric HandwheelFeature: Equipped with a clear digital scale display (typically accurate to 0.1 turns).Advantage: Operators can intuitively read the current valve opening, facilitating repeatable settings and precise commissioning.4.Full Shut-off FunctionFeature: Beyond its balancing function, the valve provides excellent sealing performance.Advantage: It can serve as an isolation valve during system maintenance or equipment repair, eliminating the need for additional shut-off valves.5.Self-sealing Test PortsFeature: The valve body is equipped with two self-sealing measurement points.Advantage: Allows rapid connection of differential pressure gauges or flow meters for flow measurement, venting, or draining without leakage upon removal.

OverviewThe ZLF self-operated balancing valve is an automatic control valve that operates based on inherent system pressure variations, specifically designed for closed-loop piping systems in HVAC water systems and centralized heating. Equipped with integrated pressure sensing and feedback mechanisms, it dynamically adjusts valve opening in real-time according to pressure differentials or flow rate changes in the controlled loop, thereby maintaining hydraulic parameters (e.g., flow rate or pressure differential) at preset values. Its core function is to dynamically absorb and eliminate excess pressure head in the pipeline network, effectively resolving hydraulic imbalance caused by pressure fluctuations or load variations. This ensures precise flow distribution to terminal devices as needed, making it a critical self-control device for enhancing system stability and energy efficiency.ZLF Self Operated Balancing Valve Product Diagram Feature1. Self-powered without external energy: The valve operates entirely on the pressure differential of the controlled system's medium, eliminating the need for external power, gas, or complex control circuits. This achieves energy-free automated operation with high system reliability and low initial investment and maintenance costs.2. Precise preset and automatic pressure stabilization: Set and lock the target control value (flow rate or pressure differential) precisely using the adjustment handwheel on the valve top or a dedicated tool. Once set, the valve automatically maintains this parameter within the preset operating range, ensuring rapid response and high accuracy.3. Extensive operational scope and excellent adaptability: The valve design features a wide adjustable ratio and suitable pressure differential range, capable of meeting dynamic variation requirements under different seasons and operating conditions, ensuring effective performance under all circumstances.4. Integrated measurement and shut-off function: Most valve models feature standard measurement connectors on the valve body, enabling seamless connection with smart instruments for non-intrusive parameter monitoring, thereby simplifying debugging and diagnostics. Additionally, the valves provide reliable shut-off sealing performance, making them suitable as isolation valves in their respective circuits.5. Energy efficiency and simplified commissioning: By automatically limiting and stabilizing flow or pressure differentials in each loop, the system significantly reduces the pump's ineffective head and overall energy consumption. Its "post-set automatic operation" feature also greatly reduces the workload for initial system adjustment and subsequent maintenance.

OverviewThe ZYC self-operated differential pressure control valve is an automatic regulating valve that operates without external power, relying on pressure variations within the controlled system. Its core function is to stabilize and control the pressure difference between the protected loop (e.g., user heating systems, air conditioning terminal equipment) and the main system pipeline within a preset range. When system pressure fluctuates, the valve automatically adjusts its opening degree through deformation of the internal pressure-sensitive diaphragm, dynamically regulating the flow resistance to absorb excess pressure head. This ensures terminal equipment operates under safe and stable pressure conditions, preventing hydraulic imbalance, noise, and equipment damage. As a critical self-control component, this valve enables dynamic hydraulic balance in closed-loop water systems such as centralized heating and central air conditioning, ensuring efficient and stable system operation. ZYC Self Operated Differential Pressure Control Valve Product DiagramFeature1. Self-powered operation without external energy: The valve relies entirely on the medium pressure within the controlled system for actuation and regulation, eliminating the need for additional power, gas, or controllers. This design achieves energy efficiency, reduces initial investment and operational costs, while enhancing system reliability.2. Accurate pressure differential control and stability: The system features a high-sensitivity pressure-sensitive diaphragm and actuator for rapid response to pressure variations. By adjusting the set knob, the required constant pressure differential can be precisely set and locked, ensuring high control accuracy. This effectively absorbs pressure fluctuations in the pipeline network, providing a stable operating environment for end-user equipment.3. Wide operating range and excellent shut-off performance: The valve features a broad adjustable pressure differential and flow range, making it suitable for diverse industrial applications. Moreover, it ensures reliable closure at the preset lower pressure differential limit, providing reliable shut-off capability.4. Compact structure with easy installation and debugging: The valve body features a compact design, typically employing flange connections for convenient installation. The pressure differential value can be mechanically adjusted directly via the top adjustment knob, eliminating the need for complex calculations or specialized tools. The debugging process is simple and intuitive.5. Simple maintenance and reliable operation: The main moving parts are integrated within the valve cover diaphragm head, isolated from the medium, with strong anti-fouling capability and long service life. Low failure rate, virtually maintenance-free, providing long-term reliable protection for the system.

OverviewThe ZL47F self-operated flow balancing valve is an automatic control valve that operates solely through the hydraulic forces of the pipeline system without external power. Its core function is to automatically limit and stabilize the flow rate of the medium in the controlled loop at a preset value. When system pressure fluctuations cause variations in the loop's available head, the valve adjusts its opening in real time through the interaction of internal pressure sensors and springs, thereby changing local resistance to maintain precise flow control. Primarily used in closed-loop water systems such as centralized heating and central air conditioning, this valve effectively addresses uneven temperature distribution at terminal points caused by network pressure fluctuations, ensures dynamic hydraulic balance, and serves as a critical device for achieving on-demand distribution and energy-efficient operation.ZL47F Self Operated Flow Balancing Valve Product DiagramFeature1. Self-acting working principle with reliable operation: The valve utilizes the pressure differential changes in the controlled loop as the driving force, achieving automatic regulation through the balance of built-in springs and pressure-sensitive diaphragms (or pistons). It requires no additional power or gas source, featuring a simple structure and stable, reliable operation.2. Accurate flow control and locking: The target flow rate can be preset and mechanically locked using a dedicated tool or handwheel on the valve body. Once set, the valve automatically maintains a nearly constant flow rate within the allowable pressure differential range, ensuring high control precision and effectively preventing over-flow or under-flow.3. Extensive operational range: The valve features a wide adjustable flow range and adaptable working pressure differential, enabling it to accommodate seasonal variations and load fluctuations across systems, ensuring consistent flow control under all operating conditions.4. Equipped with shut-off and measurement functions: The valve ensures reliable sealing when fully closed, functioning as a loop cutoff valve. Some models feature a measurement port on the valve body, allowing connection to specialized instruments for convenient flow rate detection without affecting valve operation, facilitating debugging and routine inspections.5. System optimization for energy efficiency: By eliminating redundant head between loops and automatically balancing branch flow, this solution effectively reduces pump head requirements and total system energy consumption. It also minimizes commissioning efforts while enhancing overall system efficiency and stability.

OverviewThe KPF balancing valve is a specialized valve designed for hydraulic balance regulation and measurement in fluid pipeline systems, particularly HVAC water systems. By precisely adjusting the opening degree between the valve core and seat, it regulates flow rate or pressure differential in specific branches, eliminating hydraulic imbalance between parallel loops to ensure accurate distribution of cooling/heating according to design specifications. Equipped with precise opening indicators and measurement interfaces, this valve serves as a critical component for system commissioning and energy-efficient operation.KPF Balancing Valve Product DiagramFeature1. Precision adjustment and measurement capabilities: The valve features linear or equal percentage flow characteristics with precise opening indication scales. A dedicated measurement nozzle on the valve body allows real-time flow and pressure differential readings via a specialized smart instrument, providing accurate data for system balancing and debugging.2. Excellence in adjustment stability and locking functionality: Featuring precision-machined valve core and stem, the system ensures smooth adjustment and precise positioning. Equipped with a memory locking mechanism, it locks the set opening upon completion of adjustment, effectively preventing deviation of the set value due to accidental contact or system pressure fluctuations, thereby ensuring long-term stable operation of the system.3. Wide control range and excellent shut-off performance: The valve features a high control ratio (up to 30:1 or more), enabling precise regulation across a broad flow range. Its core design ensures reliable sealing at the closed position, making it suitable for use as a shut-off valve in specific applications.4. Low flow resistance and reliable performance: The optimized flow channel design ensures a high Kv value (flow resistance coefficient) at full open position, resulting in minimal pressure drop and reduced system energy consumption. The valve stem features a reliable seal to effectively prevent external leakage.5. Extensive applicability: This system is ideal for static hydraulic balance regulation in water systems such as centralized heating, central air conditioning, and district cooling. As a standard solution for energy efficiency and comfort enhancement, it is particularly suitable for initial system commissioning and retrofitting.

The EDRV electric dynamic balance control valve achieves automatic compensation under pressure fluctuations through its valve core dynamic adjustment mechanism, maintaining a constant differential pressure across the P2-P3 section to suppress system pressure interference. When paired with a linear or part-turn electric actuator, it maintains a flow characteristic curve consistent with theoretical values at any opening, solving the flow deviation issue common in traditional control valves due to differential pressure changes. It has a working pressure of PN16, an applicable temperature range of 0-100℃, a differential pressure range of 30-300KPa, and a flow rate error of ≤5%. Major models cover DN25 to DN250, achieving precise flow control under complex working conditions by adjusting the opening.Product Image of EDRV Electric Dynamic balance Control Valve Feature1. High integration of functions:Combines electric regulation and dynamic balance functions into a single valve body. This significantly simplifies system pipeline design, reduces the number of valves installed and potential leakage points, and lowers overall investment costs.2.Excellent pressure-independent characteristics:Equipped with a built-in high-sensitivity pressure compensation device that automatically offsets the interference of network pressure fluctuations on flow. Within the rated differential pressure range, flow is only affected by control signal commands, effectively solving flow interference between terminal devices and dynamic hydraulic imbalance.3.High-precision linear regulation:The valve core structure is optimized through fluid dynamics to provide excellent linear or equal percentage flow characteristics. Combined with a high-resolution electric actuator, it achieves continuous and precise proportional regulation of media flow, ensuring process parameters remain stable near the set point.4.Significant energy-saving effect:By dynamically locking the flow of each terminal branch, it eliminates system overflow and ensures the circulating pump always operates within a high-efficiency range. Compared to traditional regulation systems, this valve effectively reduces transport energy consumption and improves the overall efficiency of the thermal system.5.Simplified commissioning process:During initial system operation or subsequent expansions, tedious manual hydraulic balance is unnecessary. The system automatically reaches a hydraulic balance state by simply setting actuator parameters according to the design flow, greatly shortening the project delivery cycle.6.Intelligent drive and real-time feedback:Equipped with an intelligent electric actuator that receives 4-20mA or 0-10V standard signals and provides precise valve position feedback. It supports fault self-diagnosis and fail-safe protection upon signal interruption, facilitating integration into BAS or DCS automation control systems.7.Durable materials and long-term stability:Valve bodies are available in ductile iron, cast steel, or stainless steel, with internal parts made of wear-resistant and erosion-resistant materials. Precision-machined sealing pairs ensure long-term operational reliability and excellent zero-leakage shut-off performance.8.Convenient and economical maintenance:The compact structure and scientific connection between the actuator and valve body allow for inspection and replacement of the actuator without dismantling the pipeline. The modular design of internal components makes routine cleaning and replacement of wearing parts simple, resulting in low maintenance costs.

The BQ7300 electric balancing valve is an intelligent flow control device that integrates a high-precision electric actuator with a hydraulic balancing valve body. Designed for modern HVAC systems and district heating networks, it aims to achieve remote automatic balancing and precise control of water systems. Its operating principle involves receiving standard analog signals (such as 4-20mA) from BAS or DCS systems to accurately adjust the valve plug position, thereby dynamically adjusting pipeline resistance to eliminate hydraulic imbalance among parallel loops. The BQ7300 series not only possesses the differential pressure measurement and pre-setting functions of traditional balancing valves but also enables the on-demand distribution of heating and cooling energy through electric actuation, serving as a core execution component for enhancing system energy efficiency and ensuring indoor comfort.Product Image of BQ7300 Electric Balancing Valve Feature1. High functional integration:Combines the dual functions of an electric control valve and a balancing valve into a single body. This design simplifies pipeline layout, reduces connection points, and significantly lowers engineering installation costs and space requirements.2.High-precision linear regulation:The valve plug profile is optimized through fluid dynamics to provide excellent linear or equal percentage flow characteristics. Combined with high-resolution electric drive units, it enables continuous and precise proportional regulation of the media flow for stable control parameters.3.Built-in differential pressure and flow measuring ports:The valve body is equipped with two dedicated measuring nipples for connecting smart balancing instruments. Operators can directly read real-time pressure drops to calculate instantaneous flow, providing accurate data for hydraulic balance analysis.4.Excellent shut-off sealing performance:Utilizing single-seat or cage-guided structures with finely lapped sealing surfaces, the valve maintains high sealing integrity. It provides reliable shut-off in the fully closed position while performing flow regulation.5.Intelligent drive and self-diagnosis:Equipped with an intelligent electronic actuator featuring built-in servo control and non-intrusive field settings. It includes stall protection, overload protection, and self-diagnostic functions, with real-time valve position feedback to the control room.6.Mechanical self-locking and high stability:The transmission mechanism uses worm gears or lead screws with natural self-locking capabilities. Once adjusted, the valve position effectively resists fluid pressure fluctuations, ensuring constant flow settings in complex load environments.7.Durable materials and wide adaptability:The body is available in high-quality ductile iron, cast steel, or stainless steel with hardened internal parts. It is erosion-resistant and suitable for various media including chilled/hot water, industrial circulating water, and glycol solutions.8.Convenient maintenance and low operating costs:The compact design and scientific connection between the actuator and body allow for drive component maintenance without dismantling the pipeline. Modular wearing parts make routine inspection and cleaning simple and efficient.

The EDRV electric dynamic balance valve (commonly known as a Pressure Independent Control Valve or PICV) is a high-efficiency hydraulic control device that integrates dynamic balance and electric regulation functions. Its core structure consists of an electric actuator and a regulating valve body with a built-in automatic differential pressure compensation device, allowing for precise adjustment of media flow according to instructions from an automatic control system. The valve works through a precision mechanical compensation mechanism that offsets network pressure fluctuations in real-time to ensure the flow remains constant at a set opening. This pressure-independent characteristic effectively solves flow interference between terminal devices and dynamic hydraulic imbalance in large-scale HVAC and heating systems. As a critical component of intelligent energy management systems, the EDRV is widely used in central air conditioning HVAC systems, large regional heating projects, and process cooling water systems, providing an ideal solution for refined temperature control and energy conservation.Product Image of EDRV Electric Dynamic balance Control Valve Feature1.Highly integrated functions:Achieves a triple combination of electric regulation, dynamic balance, and flow limitation within a single valve body. This significantly reduces the number of components required for installation, simplifies pipeline layout, and lowers overall investment and maintenance costs.2.Excellent pressure-independent characteristics:Equipped with a built-in high-sensitivity pressure compensation component that automatically offsets pressure fluctuations caused by other branches switching in the network. Within the rated differential pressure range, flow is only adjusted by the control signal and is not affected by network pressure changes, completely eliminating terminal interference.3.Extremely high flow control precision:The valve core features a streamlined profile optimized by fluid dynamics to provide excellent linear or equal percentage flow characteristics. Combined with a high-resolution intelligent actuator, it enables continuous and precise proportional fine-tuning of media flow to ensure stable control parameters.4.Significant energy-saving effect:By dynamically locking the flow of each terminal branch, it effectively eliminates overflow and bypass phenomena, ensuring the circulating water pump always operates in its high-efficiency zone. Compared to traditional balance solutions, it effectively reduces pumping energy consumption and improves the comprehensive efficiency of the thermal system.5.Simplified and efficient commissioning:During initial operation or expansion of the system, tedious manual hydraulic balance is unnecessary. The system automatically reaches a hydraulic balance state simply by setting actuator parameters according to the design flow, greatly shortening the project delivery cycle.6.Intelligent drive and real-time feedback:Equipped with an intelligent electronic electric actuator that receives standard control signals and provides precise valve position feedback. It supports fault self-diagnosis and fail-safe protection upon signal interruption, facilitating seamless integration with BAS or DCS systems.7.Durable materials and stable operation:The valve body is made of high-quality brass, and internal balance components are mostly made of high-strength stainless steel. Precision-machined sealing pairs ensure long-term operational reliability and provide excellent shut-off performance.8.Modular design for easy maintenance:The compact structure and scientific connection between the actuator and valve body allow for actuator inspection and replacement without dismantling the pipeline. Modular internal wearing parts make routine cleaning and maintenance simple, significantly reducing operating expenses.

A static balancing valve is a hydraulic balancing device used for manual adjustment and setting in fluid pipeline systems (primarily HVAC and centralized heating water systems). By manually adjusting the valve core opening, it modifies local resistance to precisely distribute and lock the flow in each parallel branch. This valve lacks automatic regulation capability during operation, with its set values remaining fixed after initial system commissioning. It primarily eliminates inherent static hydraulic imbalances in the system, ensures accurate distribution of design flow rates, and serves as a fundamental component for achieving system energy efficiency and operational stability.Static Balancing Valve Product DiagramFeature1. Preset and Locking Function: The valve features precise opening indication scales and a reliable mechanical locking mechanism. Operators can adjust the valve and lock the opening according to the design flow rate, effectively preventing preset value changes caused by misoperation or vibration, ensuring the system remains in a balanced state over the long term.2. Measurement capabilities and quantitative debugging: The valve body integrates a dedicated measuring nozzle that connects to smart instruments, enabling real-time measurement of flow rate, pressure differential, and temperature through the valve without affecting its operational status. This transforms system debugging from empirical judgment to data-driven quantification, significantly improving both precision and efficiency.3. Excellent regulation performance: Featuring a valve core design with linear or isobaric flow characteristics, it ensures high regulation linearity. The system provides a wide range of KV values or preset openings, enabling precise and smooth regulation across a broad flow range.4. Shut-off function and low flow resistance: The valve exhibits excellent sealing performance in the fully closed position, making it suitable as a pipeline shut-off valve. When fully open, the optimized flow channel design results in an extremely low resistance coefficient, minimizing unnecessary energy consumption in system transportation.5. Wide application and stable reliability: The robust structure requires no external power and is suitable for various scenarios requiring one-time hydraulic balance setting, such as fan coil units, radiator branches, and thermal inlet systems. It features a purely mechanical structure with low failure rate and minimal maintenance requirements.

OverviewThe SP15 brass female threaded static balancing valve is a high-efficiency hydraulic balance control element specifically designed for HVAC system terminal equipment and small-scale pipelines. This valve integrates precise flow regulation, hydraulic condition measurement, opening position locking, and complete shut-off functions. The valve body is forged (or cast) from high-quality brass, offering excellent corrosion resistance and pressure-bearing capacity. Through its high-precision numeric handwheel, commissioning personnel can easily preset the maximum flow rate of the pipeline. This effectively resolves the "uneven heating and cooling" issues caused by unbalanced resistance in branch pipes, achieving static hydraulic balance, enhancing indoor comfort, and significantly reducing system energy consumption.Product Image of SP15 Brass Female Threaded Static Balancing Valve Feature1.Premium Brass Material, Corrosion Resistant and DurableFeature: The valve body and core internal wetted parts are made of high-quality brass (such as H59 or CW617N).Advantage: Provides exceptional anti-corrosion and rust resistance, making it ideal for HVAC water systems with alternating hot and cold water, as well as water supply/drainage systems with strict water quality requirements, ensuring a long service life.2.High-Precision Numeric Handwheel and Memory LockFeature: Equipped with an ergonomic numeric handwheel with clear scales (accurate to 0.1 turns) and a built-in opening lock mechanism.Advantage: Adjustment is intuitive and precise. The locking function ensures that after system maintenance (requiring full closure), the valve can be quickly and accurately reopened to its original balanced position, preventing unauthorized or accidental adjustments.3.Dual Self-Sealing Test PortsFeature: The valve body comes with two self-sealing measurement nipples.Advantage: Allows rapid connection of portable differential pressure/flow commissioning instruments to read real-time pressure drop and flow data, making complex system commissioning digitized and visualized.4.Excellent Shut-off FunctionFeature: The valve plug sealing surface typically uses wear-resistant PTFE or EPDM soft sealing materials.Advantage: In addition to flow regulation, it serves as a reliable isolation (shut-off) valve with zero leakage. No additional ball or gate valves are needed when cleaning strainers or replacing terminal equipment.5.Compact Design and Easy InstallationFeature: Utilizes standard internal pipe threads for a compact and small-footprint structure.Advantage: Particularly suitable for narrow or restricted spaces, such as above Fan Coil Unit (FCU) drip trays, in ceiling voids, or inside manifold boxes.