Shenzhen Wofly Technology Co., Ltd.

In precision industrial fields such as petrochemicals, semiconductor manufacturing, and biopharmaceuticals, mass flow meters serve as the "core sentinels" for controlling fluid transfer accuracy. However, in practical applications, the two terms "operating condition flow" and "standard condition flow" often confuse practitioners, directly affecting data judgment and production decisions. As an enterprise specializing in fluid control solutions, Shenzhen Wofly Technology combines years of industry experience to uncover the core differences and application logic between the two for you. First and foremost, the fundamental distinction between operating condition flow and standard condition flow stems from the difference between the "real-time state" and "standard state" of the measurement environment. Operating condition flow (full name: flow under operating conditions) refers to the instantaneous flow of fluid under real-time working scenarios, including current temperature, pressure, humidity, and other conditions. For example, in the feeding process of a chemical reactor, the medium temperature may reach 120℃ and the pipeline pressure may be maintained at 2.5MPa; the real-time flow displayed by the mass flow meter at this time is the operating condition flow, which directly reflects the actual transfer capacity of the fluid under the current working conditions.   In contrast, standard condition flow is the flow value converted from the operating condition flow to a standard reference state. The internationally accepted standard is typically 0℃ temperature and 101.325kPa pressure, while some industries may adopt customized standards such as 20℃ or 25℃. The core significance of this conversion is to eliminate the impact of environmental fluctuations—fluid volume under different operating conditions changes with temperature and pressure variations. Only by unifying to the standard condition can data comparison and accurate accounting be achieved across different scenarios and enterprises.   Why is it crucial to clearly distinguish between the two? In a case involving a semiconductor client served by Wofly Technology, mistakenly using operating condition flow as standard condition flow for raw material proportioning led to deviations in the chip coating process, resulting in batch product defects. In fact, for key links such as measurement settlement, process formulation, and equipment selection, standard condition flow is the only benchmark data with reference value; while operating condition flow is more suitable for real-time monitoring of the dynamic operation status of fluids in pipelines and timely early warning of pressure abnormalities and other issues. As a high-tech enterprise deeply engaged in the fluid control field, Wofly Technology's mass flow meters are all equipped with high-precision intelligent conversion systems, which can automatically collect operating condition parameters and complete standard condition conversion. They also support dual data display functions to meet the needs of different scenarios. Relying on independently developed sensor technology, the equipment can maintain a measurement accuracy of ±0.1% even under complex operating conditions such as high temperature, high pressure, and strong corrosion, providing reliable data support for customers. The accuracy of fluid measurement directly determines the quality and efficiency of industrial production. In the future, Shenzhen Wofly Technology will continue to focus on technological innovation, not only providing high-precision measurement equipment to the market but also helping industry partners build a "precision line of defense" for production data through professional popularization and customized services, jointly promoting the standardized development of the industrial fluid control field.

AFKLOK Ultra High Purity Diaphragm Valve is a valve specifically designed for high-purity gas and liquid transmission. It uses an elastic diaphragm as a seal and has both manual and pneumatic opening methods. The valve opens and closes through the elastic deformation of the diaphragm, avoiding common metal contact and wear issues in traditional valves.     The main features include: • High-Purity Material: Typically made of high-purity stainless steel (such as 316L) or special alloy materials, which have excellent corrosion resistance and low gas output rate. • No Dead Angle Design: The internal structure is simple with no dead zones or hard-to-clean corners, preventing residue accumulation. • Sealing performance: Diaphragm materials (such as PTFE or FKM) have strong chemical stability and can maintain good sealing in high-temperature and high-pressure environments. • Quick Response: The opening and closing actions are swift, suitable for scenarios requiring quick control.   Technical Specifications • Working pressure: Depending on the series model, the maximum working pressure for low-pressure models can reach 300psig (20bar), while for high-pressure models it can reach 4500psig (310 bar). • Working temperature: The temperature range is typically -23°C to 65°C. • Leakage rate: The internal and external leakage rates are extremely low, typically at 1×10-9 mbar·l/s. • Surface Roughness: The inner surface roughness can reach Ra 0.13μm (5μin), ensuring high purity transmission. • Flow coefficient: The Cv value is usually around 0.27, with a maximum reaching about 0.8. • Connection methods and sizes: Common connection methods include BCR metal face seal, ferrule connectors, and welding interfaces. Sizes range from 1/4 to 1inch to choose from.   AFKLOK ultra-high purity diaphragm valves are widely used in the following fields: • Semiconductor Manufacturing: Used for the transmission of high-purity gases and liquids to ensure process purity. • New energy industry: such as high-purity media transmission in lithium battery manufacturing. • Medical Equipment: Use in fluid control where high cleanliness is required. • Aerospace: Used for precise control of high-purity media. • Precision Instrument Manufacturing: Ensures high purity and pollution-free fluid transmission.   AFKLOK Ultra-High Purity Diaphragm Valve Advantages and Features • High Purity Transmission：Ensure the purity of the medium to avoid contamination. • Strong corrosion resistance：Applicable to a variety of corrosive media. • Minimal particle formation：Designed to reduce particle generation, suitable for high cleanliness environments. • Easy to clean and maintain：No dead angle design for easy cleaning and maintenance.   AFKLOK Ultra High Purity Diaphragm Valve with its superior performance and wide range of applications, it has become the go-to device for high-purity fluid transfer and control.

Summary Centered on the core theme of “Innovation in Vacuum Coating and Surface Engineering Technologies,” the 7th Vacuum Technology Exchange Conference officially commenced today in Shenzhen. Guided by the core principle of “Breaking Technical Barriers and Fostering Industrial Synergy,” this conference features exchange sessions focused on three key topics: Atomic Layer Deposition (ALD), Chemical Vapor Deposition (CVD), and DLC/Ta-C Carbon-Based Coatings. Bringing together international experts from academia, industry, and research institutions alongside technical leaders from leading enterprises, the conference will delve into the latest breakthroughs in key technologies, pathways for industrial implementation, and core industry challenges. It aims to establish an integrated platform for “technical exchange, resource matching, and achievement transformation,” empowering vacuum technology to achieve deep integration and widespread application in critical sectors such as semiconductors, new energy, and advanced materials. 1. ALD/CVD “Precision Control” Solves the Puzzle Selecting valves for ALD/CVD systems requires not only meeting fundamental specifications but also aligning with process details. Achieving a breakthrough from “acceptable to premium” in vacuum coating and surface engineering hinges on “micron-level precision control” in ALD/CVD processes—where valve response speed and specialty gas system stability directly determine coating uniformity, purity, and yield rates. ALD: “Pulse Control” and “Zero Leakage” In vacuum coating processes, the performance of fluid control equipment is critical. Our products excel in response speed, leak rate, and temperature resistance. Equipment featuring a 316L EP-grade stainless steel valve body with PTFE seals achieves a leak rate ≤1×10⁻¹² Pa·m³/s, meeting ALD process requirements. Our multi-orifice valves, designed for high-temperature ALD coating applications, withstand elevated temperatures while optimizing purge efficiency to minimize residual precursor effects on coating quality. CVD: “Corrosion Resistance” and “Flow Stability” Our valve bodies are constructed from corrosion-resistant valve assemblies containing over 25% chromium-nickel-molybdenum alloy. The CVD process ensures continuous, long-term operation without corrosion or leakage. Regarding flow control, its multi-valve interlocking control system maintains flow deviation within ±0.2%, significantly outperforming the industry average precision standard of ±0.3%. This effectively resolves the industry challenge of “flow fluctuations causing coating thickness deviation.” Special Gas Piping “Three Properties” The “cleanliness, stability, and traceability” of specialty gas pipelines serve as the invisible safeguard for vacuum coating processes. Pipeline Cleanliness The cleanliness of pipeline inner walls must be strictly controlled. To this end, we have established a comprehensive cleanliness management system encompassing “cleaning, welding, purging, and inspection.” By employing a process combining “ultrasonic cleaning + high-purity nitrogen purging + passivation treatment,” the Ra value of pipeline inner walls consistently achieves 0.35μm. Precise matching according to pressure rating Pipeline pressures vary significantly across different vacuum coating scenarios (ALD typically ranges from 10⁻³ to 10⁻⁵ Pa, while CVD commonly operates at 0.1 to 0.5 MPa), necessitating connection methods compatible with the pressure rating. · Low pressure (≤0.3 MPa): Double ferrule connections · High pressure (≥0.5 MPa): Automatic TIG welding · Ultra-high vacuum (≤1e-4 Pa): Metal-sealed flanges Pressure Dynamic Equilibrium Pulsed gas supply in the ALD process causes pipeline pressure fluctuations. If fluctuations exceed ±0.02 MPa, precursor concentration stability is compromised. By adjusting the upstream pressure regulator, we controlled inlet pressure fluctuations to ±0.005 MPa. Combined with real-time feedback regulation from a high-precision pressure sensor with ±0.1% FS accuracy, we ultimately achieved pipeline pressure fluctuations ≤±0.003 MPa, ensuring consistent ALD pulse jet concentration. Core Upgrade Directions for Special Gas Equipment Special gas equipment must transition from “isolated operation” to “deep integration with the process.” Gas Mixing Equipment: Multi-Component Precision Blending CVD processes typically require 2-4 gases mixed in fixed proportions. Therefore, we employ internationally leading high-precision mass flow controllers (MFCs) with measurement accuracy of ±0.05% FS, ensuring exceptional stability and reliability in fluid flow control. Equipped with our proprietary mixing algorithm, these controllers continuously monitor and compensate for the effects of gas temperature and pressure fluctuations on flow parameters. Exhaust Gas Treatment Equipment: Meets Both Environmental and Safety Standards The exhaust gas generated by the CVD process must meet emission standards. We employ an integrated exhaust gas treatment system. Dry Adsorption Stage: Equipped with highly selective specialized adsorbents, this multi-stage adsorption system achieves ultra-high adsorption efficiency of ≥99.9%. Incineration Stage: For complex, hard-to-degrade organic compounds, a high-temperature pyrolysis environment is created. Combined with turbulent combustion enhancement technology, this achieves a deep decomposition rate of ≥99.99%, completely eliminating the risk of organic pollutants. Integrated “Special Gas Cabinet + Piping + Equipment” System To minimize interface points and reduce leakage risks, we offer an integrated solution. From specialty gas cabinet design (including purification, distribution, and safety controls) to pipeline welding and exhaust gas treatment equipment integration, the entire process is professionally executed by a single team. Leveraging the Association as a Bridge to Advance Industry Technology This conference on “Innovation in Vacuum Coating and Surface Engineering Technology” serves not only as a platform for industry-wide technological exchange but also exemplifies Wofei Technology's commitment to deepening industry connections and advancing “technology-empowered manufacturing.” Moving forward, we will continue leveraging the Vacuum Technology Industry Association as a bridge, focusing on fluid control requirements for core processes like ALD/CVD. We aim to drive the implementation of more technological innovations, propelling vacuum coating and surface engineering technology toward a new era of higher precision and enhanced safety!  

As an indispensable part of fluid control systems, the importance of gas valves is self-evident. Whether in the chemical industry, petroleum, natural gas transportation, or in the environmental protection, pharmaceutical, food and other fields, gas valves play a crucial role. They are responsible for controlling parameters such as gas flow, pressure, and flow rate, ensuring the safe and efficient operation of the system. Below, we will delve into the characteristics of gas valves. High Sealing Performance: Precise Control from Material to Structure Gas valves have extremely high requirements for sealing performance. Due to the small molecular spacing and strong diffusion ability of gas, any leakage will not only cause a waste of resources but also may have a serious impact on the environment and safety. Therefore, gas valves usually adopt a precise sealing structure and high-quality sealing materials to ensure that the valve can completely isolate the gas and prevent leakage when closed.   Excellent Corrosion Resistance: Solutions for Corrosive Environments in Multiple Scenarios The gas media that gas valves come into contact with are often corrosive, such as hydrogen sulfide and sulfur dioxide. These corrosive gases place higher demands on the materials of the valves. Gas valves are usually made of corrosion-resistant materials such as stainless steel and alloy steel to ensure that the valves can still maintain good performance under harsh working conditions.   Flexible Operation and Quick Opening/Closing: Efficiency Revolution Driven by Intelligence Gas valves require flexible operation and quick opening/closing to meet the system's demand for rapid adjustment of gas flow, pressure and other parameters. For this reason, gas valves are usually made of lightweight materials to reduce the weight of the valve and the operating torque. At the same time, the valve is also equipped with an efficient transmission mechanism and actuator to ensure that the valve can quickly and accurately respond to control signals. Safety and Reliability: Systematic Design from Passive Protection to Active Early Warning The safety and reliability of gas valves are directly related to the safe and stable operation of the entire system. Therefore, in the design and manufacturing process of gas valves, relevant standards and specifications are strictly followed to ensure the quality and performance of the valves. The valve is equipped with a variety of safety protection devices, such as overpressure protection and over-temperature protection, to deal with possible abnormal situations. In addition, gas valves have also undergone strict testing and experiments to ensure that they can operate safely and stably under various working conditions. Strong Adaptability: Customization Capability for Full Working Condition Coverage Gas valves have strong adaptability and can meet the requirements of different media, different pressures and different temperatures. Whether it is high-pressure gas, flammable and explosive gas or corrosive gas, gas valves can provide reliable solutions. In addition, gas valves can also be customized according to the actual needs of users to meet their personalized needs. High Level of Intelligence and Automation: Leap from Single-Point Control to System Collaboration With the continuous development of science and technology, gas valves are also developing towards intelligence and automation. Modern gas valves are usually equipped with intelligent control systems and sensors, which can monitor the operating status of the valve and gas parameters in real time, and make automatic adjustments according to preset programs. This intelligent and automated control method greatly improves the operating efficiency and safety of the system, and reduces errors and delays caused by manual operations.