制冷电磁阀，FDF-5

产品概述

FDF-5制冷电磁阀是一款专为制冷系统设计的自动控制阀门，适用于氟利昂制冷剂（如F12、F22）、空气、水等介质。该产品采用先进的电磁控制技术，可实现管路的快速通断，广泛应用于空调、冷冻设备等制冷系统中。其结构紧凑、性能稳定，能有效满足制冷系统的自动化控制需求。12

产品特点

FDF-5制冷电磁阀具有启闭迅速、运行可靠、使用寿命长等优势。产品采用铜管喇叭连接方式（M14×1.5螺纹接口），安装便捷。电磁阀线圈支持多种电压规格（交流24V-380V，直流12V-220V），适应不同工作环境需求。阀体设计考虑了介质流向要求，建议在阀前安装过滤器以保持管道清洁，避免堵塞。产品工作温度范围为-40℃至+50℃，能够适应大多数制冷工况。23

工作原理

当电磁阀线圈通电时，产生的磁场吸起铁芯，先导阀打开，降低活塞上部压力，利用压差推动活塞上移使管路畅通。断电时，铁芯在自重和弹簧作用下关闭先导阀，介质通过节流孔进入上腔，结合活塞自重和弹簧压力使阀口关闭。这种间接式常闭设计确保了阀门动作的可靠性和稳定性。15

技术参数

通径规格为φ8mm，工作压力范围0.03-1.7MPa。适用于环境温度＜50℃、相对湿度≤85%的工作环境。产品采用特殊设计的活塞结构，确保在各种压差条件下都能稳定工作。电压适应性强，可在额定电压-10%至+15%范围内正常工作。25

Product Introduction

The FDF-5 Refrigeration Solenoid Valve is an automatic control valve specially designed for refrigeration systems, suitable for refrigerants such as Freon F12/F22, air, water and other media. Utilizing advanced electromagnetic control technology, this product can quickly open/close pipelines, widely used in air conditioning, refrigeration equipment and other cooling systems. Its compact structure and stable performance effectively meet the automation requirements of refrigeration systems. 13

Key Features

The FDF-5 features fast switching, reliable operation and long service life. With trumpet tube connection (M14×1.5 thread) for easy installation. The solenoid coil supports multiple voltage specifications (AC 24V-380V, DC 12V-220V) to adapt to different working environments. The valve body design considers media flow direction requirements, recommending filter installation upstream to maintain pipeline cleanliness. Operating temperature range covers -40℃ to +50℃, suitable for most refrigeration conditions. 29

Working Principle

When energized, the coil generates magnetic field to lift the iron core, opening the pilot valve to reduce upper piston pressure, using pressure difference to push the piston upward for fluid passage. When de-energized, the core closes the pilot valve by gravity and spring force, while medium enters upper chamber through throttle hole to assist valve closing. This indirect-acting normally-closed design ensures reliable operation. 528

Specifications

The nominal diameter is φ8mm with working pressure range 0.03-1.7MPa. Suitable for environments below 50℃ temperature and 85% relative humidity. The specially designed piston structure ensures stable operation under various pressure conditions. Excellent voltage adaptability allows normal operation within -10% to +15% of rated voltage. 215

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