Shenzhen Wofly Technology Co., Ltd.

When the system requires automated control, rapid response, safety protection, special medium handling or space constraints, solenoid valves are the best choice. When selecting the type, a comprehensive judgment should be made in combination with control requirements, working condition parameters (pressure/temperature/medium), and installation conditions.   Parameter Category Key Parameters Selection Guidelines Fluid Characteristics Medium Type Gases/liquids/steam/corrosive media determine valve body material Medium Temperature Standard (-20~80℃), high-temperature (>150℃), low-temperature (20cSt requires large-bore or pilot-operated structure to prevent spool jamming Medium Cleanliness Particulate-containing media need filters (≥80μm) or piston-type structure Operating Conditions Operating Pressure Minimum/maximum operating pressure (e.g., 0~1.6MPa) must match valve rated pressure Operating Voltage AC220V/DC24V (industrial mainstream) must match control system Environmental Conditions Temperature (-30~60℃), humidity (

As a core fluid control component, needle valve material selection directly affects system reliability, service life, and operational costs. Used in scenarios from engine injectors to deep-sea oil extraction, it requires a systematic framework based on four core factors: medium characteristics, operating conditions, economic efficiency, and processability. 1. Medium Corrosiveness This is the primary consideration. In H₂S-containing acidic environments, 304 stainless steel fails in 6 months, while Hastelloy C-276 offers 10x better corrosion resistance and a 3+ year lifespan. For chloride media (e.g., seawater), duplex stainless steel 2205 resists stress corrosion 3x better than 316L, making it ideal for marine use.   2. Temperature & Pressure High-temperature (350℃) and high-pressure (25MPa) supercritical CO₂ systems cause carbon steel creep; Inconel 625 (yield strength ≥415MPa at 650℃) solves this. At -40℃, 304 stainless steel loses 50% toughness, but 304L (ultra-low carbon) works reliably at -196℃ for LNG systems. 3. Wear & Erosion For media with 0.5% quartz sand, cemented carbide (WC-Co, HRA90) valve seats boost wear resistance 20x vs. stainless steel, extending life to 5+ years. Stellite alloy (HRC45) balances hardness and toughness for gas-liquid two-phase flows (e.g., steam turbines).   4. Economy & Processability Brass (1/3 cost of stainless steel) dominates civil heating (80% market share). Hastelloy, though 5x pricier, cuts lifecycle costs by 40% for chemicals. Titanium’s poor machinability (3x tool wear) limits its use. Decision-Making & Future Trends Data-driven models (integrating 20+ parameters, FEA, LCCA) optimize choices—e.g., super duplex 2507 outperforms traditional materials by 35% for deep-sea extraction. Additive manufacturing will enable functionally graded materials (e.g., tungsten carbide-coated seats), shifting selection from "passive adaptation" to "active design."

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.