**Abstract:** The first generation of control valves suffers from three major issues: bulkiness, incomplete functionality, and poor reliability. As a breakthrough in new product development, the "full-function ultra-light control valve" has been introduced. Since its launch, it has received high praise and recognition from users and design institutes. As a next-generation product, it is expected to gradually replace existing leading models and become the mainstream of control valves in the coming century. **Keywords:** full-function; ultra-light; control valve **1. The History of Control Valves** Control valves have evolved over several decades, with nine main types emerging as early as 60 years ago, including single-seat, double-seat, diaphragm, angle, butterfly, ball, three-way, sleeve, and eccentric rotary valves. However, for the next 30 years, there were no significant breakthroughs or upgrades—only incremental improvements. Examples include the CV3000 in the 1970s and the domestic small single-seat and sleeve valves in the 1980s, which reduced weight and height by about 30% but failed to achieve functional or reliability improvements. As a result, the traditional single-seat, double-seat, and sleeve valves—products from the 1960s–1970s—still dominate today, which is clearly out of step with the rapid development of automation technology. This highlights the urgent need for a new generation of control valves. **2. Main Problems of Current Products** In 1997, a comprehensive survey was conducted on control valves, identifying nine key issues: excessive complexity (33.13%), variety causing trouble (67.11%), leakage (42.15%), frequent clogging and slow action (25.18%), short lifespan (13.17%), insufficient thrust (9.16%), low flow coefficient (5.12%), limited adjustment range (4.13%), and vibration/whistling (11.7%). These problems are related to both design flaws and operational conditions. However, focusing on the core issues, we identified three main challenges: - **Bulkiness**: Some valves weigh hundreds or even thousands of kilograms, making transportation, installation, and maintenance difficult. - **Incomplete Functionality**: The coexistence of multiple valve types leads to redundancy and complicates selection, maintenance, and spare parts management. - **Poor Reliability**: Issues like leakage, blockage, and slow response hinder system performance. **3. Breakthrough Direction for New Products** To address these issues, the focus shifted toward developing a new generation of control valves that would overcome the limitations of the past. Three key breakthroughs were identified: - **Weight Reduction**: Reduce the weight of single-seat, double-seat, and sleeve valves by at least 60%–80%, and be 30%–50% lighter than fine valves, achieving true miniaturization. - **Full-Functionality**: Replace multiple specialized valves with one multi-functional unit, simplifying specifications and reducing complexity in application, selection, and maintenance. - **Reliability Improvement**: Address each source of unreliability, ensuring smoother operation and longer life. **4. The Birth of the Full-Featured Ultra-Light Control Valve** After two years of dedicated research, the full-featured ultra-light control valve was developed, solving the three main problems of the old products. It features: - **Ultra-light Design**: Dramatically reduces weight and size, making handling and installation easier. - **Full-Functionality**: Combines the functions of nine different valve types into one, offering superior performance. - **High Reliability**: Incorporates advanced sealing, wear-resistant materials, and robust actuation systems to ensure long-term stability. **Performance Characteristics** - **Adjustable Performance**: R = 100–200, with improved flow characteristics and faster response. - **Excellent Shut-off Capability**: Hard-seal design ensures minimal leakage (10⁻⁶–10⁻⁷). - **Anti-Blocking and Corrosion Resistance**: Streamlined flow path and durable materials enhance durability. - **High Pressure and Temperature Tolerance**: Suitable for extreme conditions up to 32 MPa and 600°C. - **Compact and Aesthetic Design**: Optimized structure for ease of use and visual appeal. **Applications and Significance** Since its introduction, the full-featured ultra-light control valve has gained widespread attention and adoption across various industries. Thousands of units have been produced, used by over 10 manufacturers, and recognized for its lightweight, multifunctional, and reliable performance. With national patent protection, this innovation marks a fundamental advancement in control valve technology. It represents four major breakthroughs: weight reduction, functional enhancement, reliability improvement, and expanded electric actuator applications. It is set to replace traditional valves and lead the next generation of control systems. This development is a significant contribution to China's control valve industry and its technological evolution.

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