China Shenzhen Wofly Technology Co., Ltd. Company News

Selecting the right pressure reducer is critical to ensuring equipment longevity and operational safety. Below are the five key parameters that determine the performance and safety of a pressure reducer, as well as detailed recommendations when making a purchase: 1. Material and corrosion resistance The material of the pressure reducer has a direct impact on its corrosion resistance and service life, especially when dealing with corrosive gases (e.g. nitrogen dioxide, chlorine, etc.): Valve body and key components: 316L stainless steel is recommended for its excellent corrosion resistance and mechanical strength. Seals: Polytetrafluoroethylene (PTFE) or perfluoroether rubber (FFKM) are suitable for highly corrosive environments. High purity gas application: If the gas purity is ≥99.999% (Five nines), it is recommended to use BA grade or EP grade stainless steel.   2. Pressure adjustment range and stability Input/output pressure: need to match the actual demand, such as high-pressure applications (such as 40MPa) can choose piston pressure reducer (such as RF4 series). Adjustment accuracy: the output pressure fluctuation of high-quality pressure reducer should be ≤ ± 0.01MPa. Safety test pressure: usually 1.5 times the maximum input pressure, to ensure the safety of equipment in extreme conditions.   3. Flow rate and CV value CV value: represents the flow capacity of the pressure reducer, the higher the CV value, the higher the flow. For example, CV=0.08 is suitable for medium flow requirements, while CV=0.06 may be suitable for high pressure low flow scenarios. Dynamic and static pressure difference: If the difference is too large, it may indicate improper flow selection.   4. Safety performance and protection measures Overpressure protection: some high-end pressure reducers are equipped with automatic cut-off or pressure relief function. Leakage rate: high purity gas applications require very low leakage rates (e.g. ≤2×10-⁸ atm cc/sec He). Anti-reflux design: Some pressure reducers have built-in filters (10μm) to prevent contaminants from entering the system.   5. Installation and compatibility Connection type: common such as 1/4’ NPT (F), make sure to match the existing piping. Installation form: panel, wall or pipe bracket installation, according to the space layout to choose. Gauge Configuration: Cylinder pressure reducers are usually equipped with dual inlet and outlet gauges, while piped pressure reducers can be equipped with outlet gauges only.   Additional considerations Brand and after-sales service: AFKLOK usually provides more reliable technical support and warranty service. Temperature adaptability: the operating temperature range should cover the operating environment (e.g. -40°C to +74°C). Maintenance intervals: Stainless steel pressure reducers typically have a life expectancy of 1 year or more, but require regular servicing.

If your pressure reducer is experiencing erratic pressure, it is indeed possible that the unit is in need of inspection or maintenance. Below are possible causes and corresponding solution suggestions to help you quickly troubleshoot the problem: Common Causes and Solutions   Wear and tear of the internal components of the pressure reducer Phenomenon: High pressure fluctuations and failure of the adjustment knob. Cause: Diaphragms, springs or valve seals are deteriorating. Treatment: Replace the worn parts after disassembling and inspecting (recommended to be operated by professionals).   Unstable intake pressure Phenomenon: Output pressure changes drastically with input pressure. Check point: Confirm whether the pressure of the upstream air source is stable, and install a pressure regulator valve if necessary.   Excessive change of outlet load Phenomenon: Frequent starting and stopping of gas-using equipment leads to sudden pressure changes. Solution: Increase the gas storage tank on the outlet side to buffer the pressure fluctuation, or choose the pressure reducer with larger flow specification.   Clogging or freezing of impurities Phenomenon: Sluggish pressure regulation, accompanied by poor airflow. Treatment: clean the filter, drain the pipeline water; low temperature environment need to add electric heaters to prevent freezing.   Improper selection Phenomenon: Long-term overload operation leads to performance degradation. Suggestion: Check whether the rated flow rate and pressure range of the pressure reducer match the actual demand.   Quick self-test steps Observe the pressure gauge: record the input and output pressure value, confirm whether the fluctuation is out of the normal range. Watch for leaks: Use soapy water to coat the ports and watch for bubbles. Listen for strange noises: If there is a gas leak, it may be a seal failure. Manual Adjustment: Try adjusting the knob slowly to check the pressure response. Troubleshooting the gas end: Turn off the downstream equipment and observe whether the pressure returns to stability to determine whether it is a load problem.   Maintenance Tips Regular Maintenance: Check seals and clean cartridges every 3-6 months. Replacement of consumables: Rubber seals are recommended to be replaced once every 1-2 years (depending on the frequency of use). Professional calibration: Precision application scenarios require periodic delivery of pressure accuracy checks.   If the above steps still can not solve the problem, or the equipment has serious leakage / damage, it is recommended to contact the manufacturer or professional maintenance personnel to deal with, to avoid potential safety hazards.   Tip: Be sure to cut off the gas source and relieve the pressure before operation! Safety first!

Cylinder couplings are made of nickel-plated brass instead of pure brass, mainly based on the following advantages: 1. Significantly improve corrosion resistance Limitations of brass: brass (copper-zinc alloy) itself is susceptible to moisture, acidic or alkaline media corrosion, long-term use may produce patina or oxide layer, resulting in a decline in sealing or contamination of the medium. Advantage of nickel plating: nickel layer has excellent corrosion resistance to water, oxygen, weak acids and alkalis and some chemical media, especially suitable for high-pressure gases, high-purity gases or corrosive environments (e.g., industrial, medical fields).   2. Enhanced wear resistance and sealing The hardness of nickel is higher than brass (nickel hardness is about HV200-300, brass is about HV100-120), nickel-plated joints are more resistant to repeated insertion and removal, friction, and prolong the service life. The smooth surface of nickel-plated layer can reduce the microscopic leakage of the sealing surface and enhance the airtightness, which is crucial for high pressure or flammable and explosive gases (e.g. hydrogen, oxygen).   3. Protection against copper ion contamination In the food, pharmaceutical or electronics industries, copper ions can contaminate high-purity gases or liquids (e.g. semiconductor manufacturing, oxygen for breathing). Nickel plating blocks copper migration and meets cleanliness requirements.   4. Aesthetics and tarnish prevention Brass is easy to oxidise and tarnish, nickel plating maintains a silvery-white metallic luster for a cleaner appearance, which is suitable for occasions where aesthetics are required (e.g. laboratory equipment).   5. Balance of cost and performance Full nickel fittings are too costly, while nickel-plated brass retains the good machinability of brass (easy to form, low cost) while improving key performance through surface treatment, which is more cost-effective. Typical application scenarios High-pressure gas cylinders: such as industrial oxygen, acetylene, argon, etc., need to prevent corrosion and sealing. Medical equipment: avoid copper contamination and need frequent disinfection (nickel plating resistant to alcohol, disinfectant). Special environment: marine, chemical and other humid or corrosive occasions. Precautions Plating quality: If the nickel plating process is poor (e.g. insufficient thickness, poor bonding), it may peel off and accelerate corrosion. Select plating that meets standards (e.g. ASTM B733). Compatibility: some media (such as hydrogen sulphide) may react with nickel, it is necessary to choose other plating (such as chromium plating) or stainless steel.   In summary, nickel-plated brass fittings outperform pure brass in most scenarios and are the preferred solution for reliability, economy and safety.

Stainless steel pipes are classified into BA grade (Bright Annealed) and EP grade (Electro Polished) mainly to meet the requirements of different application scenarios for pipe surface cleanliness, corrosion resistance and roughness. These two grades have different treatment processes and are suitable for different industrial environments, especially in high purity gas or liquid transport systems. It can be distinguished from the following four aspects. 1. Different surface treatment processes BA grade (bright annealing): high-temperature heat treatment under the protection of reducing atmosphere (such as hydrogen or argon), eliminating the internal stress of the steel pipe, and at the same time, forming a passivation film, so that the surface is smooth and clean, and the roughness Ra ≤ 0.4 μm.   EP grade (electrolytic polishing): on the basis of BA tube, further electrochemical polishing treatment is carried out to make the surface smoother, with roughness Ra ≤ 0.15 μm, and to enhance corrosion resistance.   2. Cleanliness and corrosion resistance BA grade is suitable for high purity gas transport (e.g. semiconductor, pharmaceutical industry), but EP grade is suitable for ultra-high purity environment (e.g. microelectronics, optoelectronics industry) due to electrolytic polishing, which makes the surface smoother and reduces the particle adhesion. EP grade has better corrosion resistance than BA grade due to the formation of a denser chromium oxide film after electrochemical polishing.   3. Cost and applicable industries BA grade has lower cost and is suitable for most high purity gas systems (e.g. compressed air, chemical delivery). EP grade is more costly and is mainly used in areas with extremely high cleanliness requirements (e.g. semiconductor wafer manufacturing, biopharmaceutical WFI systems).   4. Physical properties BA grade retains some mechanical strength and is suitable for piping systems that require some toughness6. EP grade may slightly reduce the material thickness due to the polishing process, and is suitable for applications where very low fluid resistance is required.   To summarise The division between BA and EP grades is based on different surface treatment processes and application requirements. BA grades are suitable for general high-purity environments, while EP grades are suitable for ultra-high-purity and highly corrosive media transport, such as semiconductors, biopharmaceuticals and other industries.

Selecting the right stainless steel pressure gauge for your use requires comprehensive consideration of a number of factors, including the measurement environment, media characteristics, accuracy requirements, installation methods and so on. The following are the key selection points: 1. Determine the measurement range and range Stable pressure: the maximum working pressure does not exceed 2/3 of the range. Pulsating pressure (such as hydraulic systems): the maximum working pressure does not exceed 1/2 of the range. High pressure measurement: max. working pressure not exceeding 3/5 of the measuring range. Minimum pressure: not less than 1/3 of the measuring range to ensure measurement accuracy.   2. Selecting an Accuracy Level For high accuracy requirements (e.g., aerospace, laboratory): select Class 1.0 or Class 1.6. General industrial applications (e.g., water supply and drainage, boilers): Class 2.5 is sufficient. 3. Consider media characteristics Corrosive media (e.g. acids and alkalis, chemical fluids): choose 316 or 316L stainless steel, or even titanium or monel alloys. Viscous or easily crystallised media: choose diaphragm gauges to prevent clogging. High-temperature media: stainless steel movement can withstand +200°C, but the liquid-filled shock-resistant type can only support +100°C, and condensation bends are required for ultra-high temperatures. 4.   4. Dial size and mounting method Small space installation (such as equipment panel): 50mm or 60mm dial. Remote observation (e.g. pipeline monitoring): 100mm or 150mm dial.   Mounting method: Radial connection (bottom mounting). Axial connection (back mounting). Flange or clamp mounting (special requirements). 5. 5. Vibration Resistance and Protection Requirements High vibration environments (e.g., machine shop, marine): Select a liquid-filled, vibration-resistant gauge to minimise pointer jitter. Wet or corrosive environments: Ensure IP65 or higher protection against water vapour.   6. Thread and Connection Standards Common thread sizes: M14 x 1.5, G1/4, NPT1/2, etc., need to match the equipment interface.   7. Maintenance and Calibration Check regularly (at least every 3 months) to ensure the accuracy of the measurement. When installing, avoid screwing the case by hand and use a spanner to prevent damage.   To summarise When selecting a stainless steel pressure gauge, it is important to take into account the measuring range, accuracy, media, environment, and mounting method to ensure stability, durability, and measurement accuracy. For special conditions (e.g. extreme temperatures, strong corrosion), diaphragm seals or customised models can be considered.

Selecting the right check valve for industrial applications requires comprehensive consideration of fluid characteristics, operating conditions, installation requirements and valve performance and other factors. The following are detailed selection steps and considerations: 1. Define the fluid characteristics Type of medium: liquid, gas, vapour or slurry? Corrosive, viscous or containing particles? Corrosive media: selection of corrosion-resistant materials (such as stainless steel 316, Hastelloy, PTFE lining). High viscosity or containing particles: preferred spin or ball check valve, avoid disc type (easy to clog). Temperature and pressure: high temperature and pressure need to choose metal seal (such as spring-assisted lift valve), low temperature and low pressure can be plastic or rubber seal.   2. Key operating parameters Pressure Rating: Ensure that the rated pressure of the valve (PN/Class) is ≥ the maximum system pressure, and take into account pressure fluctuations. High-pressure systems (such as hydraulic systems) need to use forged valve body.   Temperature range: Sealing materials need to match the temperature (e.g. NBR rubber for -30°C ~ 80°C, PTFE for -200°C ~ 260°C).   Flow requirements (Cv value): Calculate the required Cv value to avoid excessive valve pressure drop affecting system efficiency. 3. Material selection Valve body material: Carbon steel (economic, suitable for non-corrosive media). Stainless steel 304/316 (general corrosion resistance). Special alloy (such as titanium, monel, for strong acid and alkali environment).   Sealing materials: EPDN (water and steam resistant), FKM (oil resistant), PTFE (chemical resistant).   4. Installation and maintenance Installation direction: Lift type valves must be installed in the direction of the arrow, swing type needs to be installed horizontally.   Space limitation: Compact space select butt-clamp type or short structure valve (such as disc type).   Maintenance Convenience: Split design for easy cleaning (e.g. food/pharmaceutical industry).

Safety valves and pressure relief valves are both devices used for pressure system protection, but they differ in their operating principles, application scenarios and functions. Correctly differentiating and selecting the right pressure setting is critical to system safety. Difference between safety valve and pressure relief valve 1. Function and Principle of Operation Characteristics Safety Valve Relief Valve Primary Purpose Preventing explosion or equipment damage due to overpressure (safety protection) Maintaining stable system pressure (process control) Principle of operation Full-opening type: Instantaneous full opening when pressure reaches the set value. Rapid pressure relief Gradual: gradually open the valve with the rise of pressure, and gradually close it after the pressure is lowered. Pressure relief method One-time large amount of relief medium (such as steam, gas) Small flow continuous or intermittent relief (such as liquids, compressible fluids) Reset mode Manual reset Automatic reset       Applicable Scenarios Safety valves: used in high-pressure, high-risk situations (such as boilers, pressure vessels, chemical pipelines), to cope with sudden overpressure. Pressure relief valves: used in systems that require precise pressure control (such as hydraulic systems, water supply networks), regulating pressure fluctuations.   Standards and certification Safety valves are normally subject to stringent standards (e.g. ASME, API, GB/T 12241). Pressure relief valves may comply with general pressure control standards (e.g. ISO 4126).   How to choose the right pressure setting 1. Determine the key parameters Set pressure (Set Pressure): the pressure at which the valve starts to operate. Safety valve: ≤ system design maximum pressure (usually 1.1 ~ 1.2 times the working pressure). Pressure Relief Valve: Slightly higher than the normal working pressure (e.g. 1.05~1.1 times the working pressure). Reseat Pressure: the pressure when the valve is closed (the safety valve needs to be checked to see if it meets the system recovery requirements). Overpressure allowable value: generally not more than 10% of the system design pressure.   2. Selection Steps Evaluate the system requirements: Is it for sudden overpressure (select safety valve) or continuous regulation (select pressure relief valve)? Media type (gas/liquid/steam) and flow requirements.   Refer to regulatory standards: For example, boiler safety valves need to comply with ASME Section I or GB/T 12243.   Calculate the pressure threshold: Safety valve set pressure ≤ vessel maximum allowable working pressure (MAWP). Relief Valve Set Pressure = Normal Working Pressure + Safety Margin (5~10%).   Verify relief capacity: Ensure that the valve relief ≥ the maximum possible overpressure flow rate of the system (e.g., flow rate in case of pump/compressor failure).   3. Other considerations Media characteristics: corrosive media need to use special materials (such as stainless steel, Hastelloy). Environmental requirements: explosion-proof, low or high temperature environment requires special design. Testing and maintenance: safety valves need regular mandatory calibration (such as once a year), pressure relief valves can be online debugging.

In industry, petroleum, chemical industry and daily life, valves are key components for controlling fluid flow. Among them, needle valves and ball valves are two common types of valves, but they have significant differences in structure, function and application scenarios. This article will compare the characteristics of the two in detail, to help users make a more reasonable choice according to the actual needs. 1. Structural differences Needle valve adopts conical needle valve spool, through the fine thread rotation to adjust the spool and seat clearance, so as to accurately control the flow. Its structure is complex, good sealing performance, suitable for high-precision flow adjustment occasions.   The core component of the ball valve is a ball with a through-hole, which can be opened and closed quickly by rotating the ball by 90 degrees. Its structure is simple, convenient operation, suitable for the need to quickly cut off or connect the fluid working conditions. 2. Functional characteristics Flow control: Needle valves are suitable for fine adjustment of small flow, such as laboratory, instrumentation measurement and other scenarios; ball valves are mainly used for fully open or fully closed state, not for precise adjustment.   Sealing: Needle valves have better sealing and can withstand high-pressure environments; ball valves have good sealing when fully closed, but may wear out after long-term use.   Operation: Needle valves need to be adjusted by rotating the handle several times, while ball valves can be switched on and off by rotating 90 degrees only, which makes the operation quicker.   3. Application Scene Needle valve: widely used in petrochemical, electric power system, laboratory instruments and other fields that require precise flow control. Ball valves: commonly used in water supply and drainage systems, natural gas pipelines, HVAC and other occasions that require rapid cut-off of fluids. 4. Comparison of Advantages and Disadvantages Valve type Advantages Disadvantages Needle Valve High Precision Adjustment, Good Sealing Slow Regulation, High Price Ball Valve Quick Opening And Closing, High Durability Not Suitable for Fine Flow Control     Expert Advice Industry experts point out that when selecting a valve, the characteristics of the medium, pressure requirements and frequency of operation should be taken into account. If you need to accurately control the flow, needle valve is the ideal choice; if the pursuit of fast switching and durability, the ball valve is more advantageous.   With the development of industrial automation, smart valves are emerging, but the traditional needle valve and ball valve still occupy an important position because of its reliability and economy. Correct selection not only improves system efficiency, but also extends equipment life and reduces maintenance costs.

Shenzhen, 26 March 2025 - In industrial gas control, laboratory research and special gas applications, choosing a suitable pressure regulator is crucial to system safety and efficiency. Faced with the diverse types of regulators available in the market (e.g. diaphragm, piston, single and double stage, etc.), how to make an accurate choice according to your needs? In this article, we will analyse the characteristics and application scenarios of different regulators. 1. Define the needs: flow, pressure and purity of the medium Before choosing a regulator, three core parameters need to be clarified: Gas flow requirements: Medium flow regulators: for routine laboratory or industrial applications. High purity medium flow regulator: Improve the purity based on the medium flow, suitable for semiconductor, photovoltaic and other precision industries. High flow/high pressure high flow regulator: for high flow requirements, such as large gas stations or manufacturing facilities. Operating pressure range: High-pressure piston regulator: Resistant to high pressure (e.g., 3000 PSI or more), suitable for oil and energy fields. Diaphragm regulator: low and medium pressure environment, high sensitivity, suitable for laboratory precision instruments. Gas purity level: High purity pressure regulator: polished inner wall and non-polluting material, designed for electronic grade gases (e.g. helium, argon).   2. Key Type Comparison Single-stage vs two-stage pressure regulators: Single-stage regulators are simple and suitable for stable pressure scenarios; two-stage pressure regulators automatically compensate for pressure fluctuations and are suitable for critical processes where the outlet pressure needs to be extremely stable. Diaphragm vs Piston: Diaphragm type has good sealing and corrosion resistance; piston type has stronger pressure capacity, but requires regular lubrication and maintenance. 3. Purchasing Suggestions Certification and Qualification: Confirm that the product meets ISO, UL or industry-specific standards (e.g. SEMI standards). Vendor services: Give preference to regular vendors who provide technical advice and after-sales support. Customisation requirements: special media (such as corrosive gases) need to be customised materials (such as 316L stainless steel, Hastelloy). Industry experts remind: ‘Different application scenarios on the regulator response speed, sealing and life requirements vary significantly, it is recommended that users provide detailed parameters before making a choice.’ At present. Shenzhen Wofly Technology Co. Platform has been online full range of regulator products, users can consult online through the official website or call the hotline [0755-0927023443] to get one-on-one selection services.

With the growing global demand for clean energy, hydrogen energy, as an efficient and environmentally friendly form of energy, is gradually becoming an important direction of energy transformation. In this context, stainless steel compression fittings, with their excellent pressure resistance, corrosion resistance and sealing performance, have become a key component in the hydrogen energy delivery and storage system, providing strong support for the development of the new energy sector. 1. The rise of hydrogen energy industry and the demand for stainless steel compression fittings Hydrogen energy is regarded as an important part of the future energy mix due to its zero-emission, high energy density and renewable properties. However, the storage and transport of hydrogen puts extreme demands on equipment materials. Hydrogen is extremely permeable and corrosive, and traditional materials are difficult to meet the needs of long-term stable operation. Stainless steel compression fittings, with their excellent mechanical properties and corrosion resistance, are the ideal choice for hydrogen energy systems. In recent years, the global hydrogen energy infrastructure projects are increasing, from hydrogen refuelling stations to hydrogen pipelines, and the demand for stainless steel compression fittings has risen sharply. According to industry data, the demand for stainless steel compression fittings in the global hydrogen energy market grew by 15% year-on-year in 2023, and this trend is expected to continue strengthening over the next five years.   2. Technical advantages of stainless steel compression fittings Stainless steel compression fittings are widely used in the hydrogen energy field thanks to their unique technical advantages: High pressure resistance: able to withstand the storage and transport needs of hydrogen in high-pressure environments. Corrosion resistance: Stainless steel material can effectively resist the corrosion of hydrogen, extending the service life of the equipment. Sealing performance: the use of advanced sealing technology to ensure that the hydrogen in the delivery process without leakage, to protect the system safety. Environmentally friendly: Stainless steel is 100% recyclable, in line with the concept of sustainable development in the new energy sector.   Several manufacturers have also launched high-performance stainless steel compression fittings for the special needs of hydrogen energy systems. For example, a well-known company's latest development of ‘hydrogen special couplings’ using double seal design and surface hardening treatment, to further enhance the reliability and durability of the product.   3. Practical application cases Stainless steel compression fittings have been widely used in many hydrogen energy demonstration projects in Europe and Asia. For example, a large-scale hydrogen refuelling station project in Germany has adopted high-performance stainless steel compression fittings for connecting hydrogen storage tanks and refuelling equipment. The project leader said, ‘The high sealing and corrosion resistance of stainless steel compression fittings ensures the safe operation of the system and provides important support for the promotion of hydrogen energy infrastructure.’   In addition, stainless steel compression fittings play a key role in the gas supply system of hydrogen fuel cell vehicles. Their stable performance ensures the efficient delivery of hydrogen from the storage tank to the fuel cell, providing reliable operation of the vehicle.   4. Industry Outlook With the rapid development of the global hydrogen energy industry, the stainless steel compression fittings market has ushered in new growth opportunities. According to market research organisations, the global demand for stainless steel compression fittings in the hydrogen energy sector will reach billions of dollars by 2028. At the same time, manufacturers are increasing investment in research and development to introduce more high-performance products adapted to the needs of new energy sources. Industry insiders point out that the future of stainless steel compression fittings will not only shine in the field of hydrogen energy, and is expected to be widely used in solar energy, wind energy and other new energy fields, contributing to the global energy transition.   Conclusion Stainless steel compression fittings are becoming an indispensable key component in the new energy field due to their excellent performance and reliability. With the rapid development of the hydrogen industry and the continuous growth of the global demand for clean energy, the stainless steel compression fittings industry will usher in a broader development prospects. In the future, this ‘small part’ is expected to play a greater role in the tide of energy transformation, adding bricks and mortar to the construction of a green earth.

In industrial, medical and laboratory gas systems, CGA (Compressed Gas Association) series cylinder couplings are a key component to ensure the safe delivery of gases. However, with so many models and sizes available, many users are faced with the challenge of selecting the correct type. This article provides a comprehensive guide to the CGA range of cylinder couplings, helping you to select the most suitable product with ease. I. Introduction of CGA Series Cylinder Connector The CGA series of cylinder couplings is a standardised system of couplings developed by the Compressed Gas Association of the United States and is widely used for the connection of gas cylinders. Each CGA model corresponds to a specific gas type and application scenario, ensuring safety, compatibility and efficiency.   II.Key Factors in Selecting CGA Series Cylinder Connectors   1. Types of gases Inert gases: such as argon (Ar), nitrogen (N₂), helium (He), etc., commonly used CGA580, CGA320 and other models. Flammable gases: such as hydrogen (H₂), acetylene (C₂H₂), etc., commonly used CGA350, CGA510 and other models. Corrosive gases: such as chlorine (Cl₂), ammonia (NH₃), etc., need to choose corrosion-resistant materials (such as stainless steel) connectors. Medical gases: such as oxygen (O₂), laughing gas (N₂O), etc., commonly used CGA540, CGA870 and other models.   2. Application Scenario Industrial gases: choose high-pressure resistant and durable connectors, such as CGA580, CGA660. Medical gases: choose the connectors that meet the medical standard, such as CGA540, CGA870. Laboratory gases: choose high-purity, corrosion-resistant fittings, such as CGA320, CGA590.   3. Material selection Brass: suitable for most non-corrosive gases, lower cost. Nickel-plated brass: improve corrosion resistance and wear resistance, suitable for moderately corrosive environments. Stainless steel: suitable for strong corrosive gases and high purity gases, with higher strength and durability.   4. Working pressure Select the appropriate fitting according to the working pressure of the gas system. For example, high pressure gas system (such as hydrogen) need to choose high pressure resistant design fittings.     5. Seal type Flat seal: Suitable for most gases, sealing is achieved by gaskets or O-rings. Conical seal: Suitable for high pressure gases, better sealing performance.   III. Common CGA models and their applicable gases CGA Models Applicable Gases Typical Application Scenarios CGA320 Argon, Nitrogen, Helium Industrial gases, laboratory gases CGA350 Hydrogen Industrial gases, energy sector CGA540 Oxygen Medical gases CGA580 Oxygen, nitrogen, argon Industrial gases, medical gases CGA590 Oxygen Medical gases CGA660 Argon, Carbon Dioxide Welding Gases CGA870 Laughing gas (N₂O) Medical gases   IV. Selection Precautions Compliance with standards: Make sure the selected connector meets CGA standards to ensure safety and compatibility. Customised requirements: If there are special requirements (e.g. non-standard rod length, special materials), you can communicate with the supplier for customisation. Testing and certification: Choose products that have undergone rigorous testing and certification to ensure reliable performance. Supplier support: Choose suppliers with technical support and after-sales service in order to solve problems in use.   V. Successful Case Sharing A laboratory needed to select CGA fittings for a high-purity hydrogen system, and finally chose CGA350 stainless steel fittings with a 9cm rod length. The coupling not only meets the requirements of high purity gas, but also passes the strict leakage test and pressure test to ensure the safety and reliability of the system.   VI. Conclusion Correct selection of CGA series cylinder couplings is the key to ensure the safe and efficient operation of gas systems. By understanding factors such as gas type, application scenario, material selection and working pressure, you can easily select the most suitable connector. For further technical support or customised service, please contact us for further assistance.   About Us As a professional supplier of CGA series cylinder couplings, we offer a wide range of models and customised services to meet the needs of different customers. Our products comply with CGA standards and undergo rigorous testing to ensure safety and reliability. Welcome to contact us for more product information and technical support!   Contact Information Tel：0755 0927 0234 43 Email: info@szwofly.com Official website: https://www.woflyvalve.com

Recently, with the growing demand for industrial automation and household equipment, pressure regulators, as a key control element, have attracted much attention for their selection. Especially for novices, in the face of a wide range of pressure regulator products on the market, how to choose the right model has become a major problem. To this end, we interviewed a number of industry experts, collated a detailed selection guide to help newcomers easily handle the selection of pressure regulators.   Pressure regulator selection of key factors   1. Clear pressure range According to experts, the first task of selection is to clarify the operating pressure range of the system. Newcomers need to understand the inlet and outlet pressure requirements to ensure that the selected regulator can meet the pressure needs of the system. 2. Flow requirements should not be ignored Flow rate is an important parameter in the selection. Beginners should choose the regulator according to the maximum flow requirements of the system, to avoid insufficient flow resulting in the system can not operate normally. 3. The type of medium determines the choice of material Different media (gas or liquid) have different material requirements for regulators. For corrosive media, experts recommend choosing stainless steel and other corrosion-resistant materials to ensure the long-term stable operation of the equipment. 4. Precision and temperature range For application scenarios with high precision requirements, novices should choose regulators with high control accuracy. At the same time, the operating temperature range is also an important factor to consider when selecting the regulator to ensure that the regulator can operate normally under the operating temperature of the system. 5. Ease of installation and maintenance Experts emphasise that novices should prioritise ease of installation and maintenance when choosing a pressure regulator. Selection of products that are easy to install and maintain can greatly reduce the cost of later use. Selection steps are simplified, the novice can also easily get started   In order to help novices to better complete the selection, experts summarised a set of simplified selection steps:   1. Determine the needs: clear pressure, flow, medium and other basic parameters. 2. Screening products: according to demand from the market to screen out products that meet the conditions. 3. Comparison of performance: compare the performance of different products, materials and prices, choose the most cost-effective products. 4. Select brand: give preference to reputable brands to ensure product quality and after-sales service. (AFKLOK is a good choice) 5. Confirmation of installation and maintenance: Ensure that the selected product is easy to install and maintain, to reduce the trouble in the later use.   Industry trends: intelligent and high-precision into the mainstream   With the continuous progress of technology, pressure regulators are moving towards the direction of intelligence and high precision. Experts predict that in the next few years, intelligent pressure regulators with remote monitoring and automatic adjustment functions will become the mainstream of the market. For novices, it is also a wise choice to understand the industry trends and choose products that meet future development needs.   Conclusion   Pressure regulator selection is not complicated, as long as you master the key factors and selection steps, novices can easily handle. We hope that through the guidance in this article, the majority of users can choose the right pressure regulator for their needs, for the stable operation of the system.