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Top 10 Electronic Expansion Valve Brand & Manufacturers

This section provides a list of the top 10 Electronic Expansion Valve manufacturers, Website links, company profile, locations is provided for each company. Also provides a detailed product description of the Electronic Expansion Valve, including product introduction, history, purpose, principle, characteristics, types, usage and purchase precautions, etc.

Manufacturers （Ranking in no particular order）

: Zhejiang Sanhua Intelligent Controls Co., Ltd.

Address: Sanhua Industrial Park, No. 219, Woxi Avenue, Meizhu Town, Xinchang County, Shaoxing City, Zhejiang Province

Company website: http://www.sanhuamall.com

Company Overview

Zhejiang Sanhua Intelligent Control Co., Ltd. (a listed company, stock code 002050) was established in September 1994. In June 2005, Sanhua Intelligent Control was successfully listed on the Shenzhen Stock Exchange. In September 2007, it successfully acquired the global business of four-way reversing valves from Lanco, a subsidiary of the world's leading company, Invensys Group, integrating international industry resources and achieving a global strategic leap. In November 2012, it successfully acquired the German veteran home appliance company Avic Group, further expanding the market in the field of home appliance system components. At present, the company has established production bases in Zhejiang, Anhui, Jiangxi, Jiangsu, Hubei, Guangdong and other places, and has marketing agencies in Shanghai, Guangzhou, Zhuhai, Shunde, Suzhou, Qingdao, Hefei and other places, and has overseas subsidiaries in the United States, Japan, South Korea, Mexico, Spain, Germany, Poland, Austria and other countries. The company is a large-scale manufacturing enterprise integrating R&D, production and sales of refrigeration and air-conditioning control components and household appliance intelligent control components. Its main products include four-way reversing valves for air conditioners, electronic expansion valves, stop valves, square valves, dry filters, (copper, iron) liquid receivers for compressors, solenoid valves, ball valves, drain pumps, check valves and complete sets of (copper, iron, stainless steel, aluminum) pipe assemblies and other product series and thousands of specifications. The products are exported to dozens of countries and regions such as America, Japan, South Korea, Europe, Southeast Asia, the Middle East, Africa, Hong Kong and Taiwan, China, and have become the strategic supplier and partner of world-renowned refrigeration, air-conditioning and household appliance manufacturers such as Daikin, Panasonic, Mitsubishi, Toshiba, Hitachi, Fujitsu, Sharp, LG, Samsung, Carrier, Trane, York, BSH, GE, Whirlpool, Electrolux, Gree, Midea, Haier, Hisense, AUX, TCL, Meiling, etc.

: Danfoss (Tianjin) Co., Ltd.

Address: No. 5, Fuyuan Road, Wuqing District, Tianjin

Company website: https://www.danfoss.com/zh-cn/

Company Overview

Danfoss’s philosophy of thinking about the future dates back to September 1, 1933, when Mads Clausen founded Danfoss on his parents’ farm in Nordborg, Denmark. Since then, Danfoss has grown from a small business to a leading global supplier of innovative and energy-efficient solutions. The passion for innovative customer solutions has been in Danfoss’ blood since Mads Clausen founded it. Innovations at Danfoss can be seen from thermostatic expansion valves used in refrigeration systems to one of the thermostatic control valves for radiators that regulate heat, to frequency converters that are mass-produced worldwide, and telematic services used in precision agriculture today. In the 1930s, thermostatic expansion valves - water valves, thermostats, pressure switches, filter-driers, etc. were introduced. In the 1940s, the prototype design of the world’s first temperature-controlled radiator valve was completed, and oil burner controllers and nozzles were introduced. In the 1950s, thermostatic radiator valves began to be mass-produced. Danfoss implemented a punch-in system to achieve early digital achievements. The fuel preheater was launched in 1974, and the VLT® inverter controlled Audi's transmission line; the SONOFLO® ultrasonic flowmeter was developed. In the 1980s, the ECT weather compensation control panel and the ADAP-KOOL control system were launched. In the 1990s, the Nessie® hydraulic transmission technology was hailed as the "innovation of the century"; the EVITA® oxygen meter was launched on the market. In the 2000s, Danfoss Fluid Controls A/S merged with Sauer to form Sauer-Danfoss; Danfoss acquired several heating technology companies, including DEVI, Thermia and LPM. In 2012, Danfoss integrated variable speed technology into commercial air conditioning and launched Danfoss Link™ intelligent heating. In 2014 alone, 213 new patents were obtained. In 2019, Danfoss established an IoT partnership with Microsoft to bring expertise in refrigeration and HVAC to the "cloud". From January 2021, the Cooling and Heating divisions have joined forces to form Danfoss Climate Solutions. In August 2021, Danfoss completed the acquisition of Eaton's hydraulic business, which expanded the Danfoss Group's business by 30% and generated revenues of more than 7 billion euros. With the acquisition, Denver Power Systems has become a global leader in mobile and industrial hydraulics. With his relentless pursuit of success, Danfoss' founder Mads Clausen started with valves and created a global company that is still a benchmark for innovation today. Danfoss' core philosophy is to maintain the "essence" of Danfoss and always adhere to the Core&Clear strategy.

: Foshan Huailu Automatic Controller Co., Ltd.

Address: No. 59 and 61, Wenhua South Road, Chancheng District, Foshan City, Guangdong Province

Company website: https://www.sagnomiya.co.jp/cn/

Company Overview

Saginomiya Manufacturing Co., Ltd. was founded in 1940 (Showa 15). Its predecessor was the "Bellows Research Institute" founded by Mr. Shigeru Nishimi (the first president) in Saginomiya, Nakano-ku. In 1948 (Showa 23), Saginomiya Manufacturing Co., Ltd. was established and officially began the business of developing and producing automatic controller products. Mr. Shigeru Nishimi, the founder of the company, who transformed from an educator to an entrepreneur, insisted on advocating the concept that "all employees are the most precious assets of the company" and gradually formed the company's social atmosphere of "cultivating talents and valuing talents". Since its establishment, Saginomiya Manufacturing Co., Ltd. has always taken "seeking happiness for all employees" as its business philosophy and "when sitting alone, encourage yourself; when living in a group, others are the most important" as the company's motto. In order to realize the business philosophy, all employees work together and have been working hard and struggling unremittingly. Saginomiya Manufacturing Co., Ltd. started from producing bellows application products and has developed into a leading company in automatic controllers. Its products are widely used in various industries such as refrigeration, air conditioning, hot water heating, power equipment, automobiles, trains, ships, medical equipment, semiconductor manufacturing equipment, etc. Saginomiya also started the production of testing machines in 1964 (Showa 39), and recently created the DiM (driving simulator) test equipment through technological innovation. This product has been highly praised by domestic and foreign customers and has created new value for the company. Saginomiya will celebrate its 80th anniversary in 2020 since the establishment of the Bellows Research Institute. Thank you very much for your support and care during this period. In order to create greater success, Saginomiya has formulated a medium-term management plan (Progress85), and the company is currently working hard to achieve the goal of Progress85.

: Suzhou Fuji Koki Co., Ltd.

Address: No. 21, Fudong Road, Guangfu Town, Wuzhong District, Suzhou City, Jiangsu Province

Company website: https://www.fujikoki.co.jp/en/index.html

Company Overview

The expansion valves for automobile air conditioners, household air conditioners, central air conditioners and various control machines for refrigeration and freezing systems developed and researched by Fuji Koki Co., Ltd. of Japan all year round have made it possible to combine the comfort of living space with low energy consumption, and have won an amazing market share of 75% in the world market. All parties in the industry have highly praised Fuji Koki's research and development capabilities, and its excellent quality and performance have also confirmed this. Fuji Koki has 5 production bases in Japan, and has established a total of 6 production bases in China, the United States, South Korea, the Czech Republic and Thailand. Fuji Koki's main products include automatic temperature expansion valves, stop valves, drainage pumps, electronically controlled expansion valves, solenoid valves, pressure regulators, pressure switches, pressure sensors, check valves, liquid storage tanks and other automatic control machines for refrigeration and air conditioning. Suzhou Fuji Koki Co., Ltd. is a wholly-owned enterprise established in September 2001 by Fuji Koki Co., Ltd. of Japan with an investment of US$29.98 million. It is located in Guangfu Town, Wuzhong District, Suzhou City, which has beautiful scenery. Suzhou Fuji Machinery mainly engages in the production and sales of expansion valves for automobile air conditioners, household air conditioners, central air conditioners, and various control machines for refrigeration and freezing systems. Currently, Suzhou Fuji Machinery produces and plans to produce various automatic temperature expansion valves, stop valves, drainage pumps, electronically controlled expansion valves, liquid storage tanks, etc. With the sales of these products at home and abroad, Fuji Machinery's products are gaining more and more trust and recognition from users.

: Zhejiang Dun'an Artificial Environment Co., Ltd.

Address: Block B, Zhihui Center, No. 1190 Bin'an Road, Binjiang District, Hangzhou, Zhejiang

Company website: http://www.dunan.net

Company Overview

Zhejiang Dun'an Artificial Environment Co., Ltd. takes "leader of healthy and comfortable environment" as its vision and "improving energy efficiency and optimizing environment" as its mission. It has been deeply engaged in the field of refrigeration for many years. Its main business covers parts manufacturing (refrigeration valves, heat exchangers and pressure vessels in the fields of household and commercial air conditioners, heat pumps, refrigeration and refrigeration, thermal management of new energy vehicles, etc.) and equipment manufacturing (commercial air conditioners and special air conditioners and cold chain equipment in the fields of nuclear power, purification, communications, rail transportation, etc.). The company was listed on the Shenzhen Stock Exchange in 2004 (referred to as Dun'an Environment, stock code 002011). As a leading enterprise in the global refrigeration components industry, the company is a strategic partner of many well-known air conditioner manufacturers in the world, and its main products are among the top in the world in terms of production and sales. The company regards innovation as the soul of corporate development, and continuously improves the core competitiveness of technology and quality. It has a national recognized enterprise technology center, a national postdoctoral workstation, an academician workstation, a national certification (CNAS) laboratory, and a national central air conditioner full performance test center, and has established a core technology support system with independent intellectual property rights. The company has branches or sales offices in North America, South America, Europe, Japan, South Korea, Thailand, India, the Middle East, Malaysia, Taiwan and other places, and a manufacturing plant in Thailand.

: Copeland Environmental Technology (Suzhou) Co., Ltd.

Address: No. 69, Suhong West Road, Suzhou Industrial Park, Jiangsu Province

Company website: https://www.copeland.cn/

Company Overview

The Copeland brand traces its roots to inventor Edmund Copeland, who founded a company in Detroit, Michigan, in 1921 and changed the refrigeration industry with his unique invention. During the Great Depression, Copeland struggled and was forced to sell assets, moving operations to Sidney, Ohio in 1937. In Sidney, four young engineers from the company saw potential business opportunities and joined forces to buy the company and its compressor patents. Emerson acquired Copeland in 1986 and continues to drive the company forward with the enterprising and innovative spirit embodied by the brand's early founders and advocates. Following the acquisition, Emerson made a significant investment in a new scroll compressor product being developed by Copeland and launched the first scroll compressor sold under the Copeland brand in 1987. The product was a huge success and revolutionized the global air conditioning and refrigeration industry with its efficient and reliable performance. Emerson subsequently launched a series of Copeland scroll compressor products, which were applied in a range of applications, from home and light commercial air conditioning systems to refrigeration systems in the food and healthcare industries, as well as shipping containers. In May 2023, Blackstone Group (NYSE: BX) and Emerson (NYSE: EMR) announced that they had completed a majority stake transaction in Emerson Climate Technologies' $14 billion business transaction. The new independent company will be named "Copeland", inheriting the brand's century-old history, world-renowned brand reputation and influence in the field of HVAC refrigeration. As an independent company focused on serving the global HVAC refrigeration market, Copeland has a world-leading product portfolio, providing residential, commercial and industrial customers with compressors, controllers, thermostats, valves, software and monitoring solutions.

: CAREL Electronics (Suzhou) Co., Ltd.

Address: No. 56, Shilin Road, High-tech Zone, Suzhou City, Jiangsu Province

Company website: https://www.carel-china.com/

Company Overview

CAREL is one of the world leaders in air conditioning, refrigeration and heating control solutions, as well as humidification and evaporative cooling systems. In order to save energy and reduce environmental impact, it combines advanced technologies and customized services to create products that optimize equipment performance and make the operation of HVAC systems efficient. Solutions are widely used in commercial, industrial and residential applications. Founded in 1973, CAREL's total sales today amount to 65.02 billion euros (19.3% more than in 2022). About 80% of sales come from exports, which are achieved through an extensive sales and customer support network. In particular, it has extensive operations in the Americas (North and Central and South America), Asia Pacific, Africa and Europe; in addition to partners and distributors in the future 75 countries, it currently has 38 wholly-owned subsidiaries and 15 production sites.

: Parker Hannifin Fluid Transmission Products (Shanghai) Co., Ltd.

Address: No. 280, Yunqiao Road, Jinqiao Export Processing Zone, Shanghai

Company website: http://www.parker.com/

Company Overview

SPORLAN was founded in 1947. From the world's most advanced molded core filter driers to today's complex electronic valve controller software packages, over the years, it has become the industry standard for the development and manufacture of high-quality refrigeration and air-conditioning components. On October 11, 2004, it was acquired by PARKER HANNIFIN and became its division. The main products are expansion valves, refrigeration valves, solenoid valves, filter driers, isolation valves, filters, pressure regulating valves, thermal expansion valves, coils, etc. The main application areas of the products are: energy, aerospace, microelectronics, life and science, rail transportation, electrical machinery, mining industry, refrigeration and air conditioning, ships, oil and gas energy.

: Zhejiang Hengsen Industrial Group Co., Ltd.

Address: Jinling Industrial Zone, Ruanshi Town, Zhuji City, Shaoxing City, Zhejiang Province

Company website: http://www.cnhengsen.com/

Company Overview

Zhejiang Hengsen Industrial Group Co., Ltd. is a manufacturing enterprise with nearly 20 years of experience in the professional production of air-conditioning and refrigeration accessories, plumbing pipes and building automation equipment. It has more than 500 employees and more than 100 technicians. The company is currently a "high-tech enterprise" supported by the state, a "AAA-level credit enterprise in Zhejiang Province", "AAA-level unit in Zhejiang Province that abides by contracts and keeps its word", and "Innovative pilot enterprise in Zhejiang Province". It has a "National CNAS Accredited Laboratory", "Zhejiang Province R&D Center", "Zhejiang Enterprise Technology Center", "Zhejiang Patent Demonstration Enterprise", and "Famous Trade Name in Zhejiang Province". Many products produced by the company have won the support of "National Torch Plan Project", "National Key New Products", and "National Science and Technology Small and Medium Enterprises Innovation Fund Project", and have won the "Zhejiang Science and Technology Award" many times. The products have long been supporting manufacturers such as Daikin, Sanyo, Midea, and Gree. The company is one of the largest electric valve manufacturers in China and is responsible for drafting the national industry standard for "Electric Valves for Air Conditioning Water Systems". At the same time, the company also participated in the drafting of multiple industry standards such as "direct-acting electronic expansion valve for refrigeration and air conditioning", "direct-acting bistable solenoid valve for refrigeration system", "two-position three-way solenoid valve for small refrigeration system", etc. The company has actively explored domestic and international markets for many years, not only with significant sales in the domestic market, but also expanding its business to many countries and regions such as the United States, the United Kingdom, Spain, Germany, and Southeast Asia.

: Zhejiang Hongsen Machinery Co., Ltd.

Address: Refrigeration Industrial Park, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province

Company website: http://www.zjhsjx.com

Company Overview

Hongsen Machinery Co., Ltd. was founded in 1992 and has been devoted to the development, research and manufacture of various valves for refrigeration and air conditioning. For more than 20 years, Hongsen people have been pursuing the persistent pursuit of "pioneering and enterprising, never satisfied", insisting on taking high-tech as the development direction, and adhering to the sustainable development path of scale benefit and quality benefit. The company covers an area of 50,000 square meters, has more than 300 employees, and a professional technical team of more than 20 people, with an annual production capacity of 15 million pieces. Under the guidance of experts from Zhejiang University, Shanghai Jiaotong University and Xi'an Jiaotong University, the company hired technical experts from domestic host enterprises as consultants, and cultivated a group of strong production, technology and quality elites for the company. Now it has formed a series of solenoid valves, ball valves, sight glasses, expansion valves, stop valves and other products, and gradually developed into an integrated production enterprise. The company adheres to the principle of "honest management, customer first", and has passed UL, CQC product certification and ISO9001 quality system certification, ISO14000 environmental system certification, to provide guarantee for product quality. The company has always relied on its brand and quality as its guarantee, increased its investment in technical transformation, and continuously introduced advanced technologies. Its product quality is close to the international advanced level, and its products are sold well in domestic and foreign companies. It is a leader in the refrigeration and air-conditioning valve industry.

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Electronic Expansion Valve Information

Information

Electronic Expansion Valve Information

What is an Electronic Expansion Valve?

An electronic expansion valve (EEV) is a crucial component in refrigeration and air - conditioning systems. It is a type of metering device that controls the flow of refrigerant from the high - pressure side to the low - pressure side of the system. By precisely regulating the refrigerant flow, it helps in maintaining the proper evaporation temperature and pressure, which is essential for efficient heat transfer and cooling performance.

History of Electronic Expansion Valve

Early Expansion Valves: The concept of expansion valves dates back to the early days of refrigeration. Traditional mechanical expansion valves were initially used to control refrigerant flow. These valves had limitations in terms of precision and adaptability to changing operating conditions. As the demand for more efficient and accurate refrigeration systems grew, the need for advanced expansion valve technology became evident.
Development of Electronic Control: With the advancements in electronics and control systems, the electronic expansion valve emerged. The ability to use electronic signals to control the valve's opening and closing provided a more precise means of regulating refrigerant flow. This technology started to gain popularity in the latter half of the 20th century as the electronics industry matured and the importance of energy - efficient refrigeration was recognized.
Modern Developments: In modern times, EEVs have seen continuous improvements. They are now integrated with sophisticated control algorithms and sensors that can monitor various parameters such as temperature, pressure, and superheat. This allows for real - time adjustments to the refrigerant flow, optimizing the performance of the refrigeration or air - conditioning system. The development of more durable materials and improved valve designs has also enhanced their reliability and lifespan.

Purpose of Electronic Expansion Valve

Refrigerant Flow Control: The primary purpose of an EEV is to precisely control the flow rate of the refrigerant. By adjusting the opening of the valve, it can meter the amount of refrigerant entering the evaporator. This is crucial because the correct refrigerant flow is necessary for efficient heat absorption in the evaporator, which is responsible for cooling the space or the medium being cooled.
System Efficiency Optimization: EEVs play a vital role in improving the overall energy efficiency of refrigeration and air - conditioning systems. By accurately maintaining the superheat level (the difference between the actual temperature of the refrigerant vapor and its saturation temperature), they ensure that the refrigerant is fully vaporized before leaving the evaporator. This prevents liquid refrigerant from entering the compressor, which can lead to damage and reduce system efficiency.
Adaptability to Load Changes: These valves can quickly respond to changes in the cooling load. In an air - conditioning system, for example, when the room temperature changes due to external factors such as sunlight or the number of occupants, the EEV can adjust the refrigerant flow to meet the new cooling requirements. This adaptability helps in maintaining a consistent temperature and reduces energy consumption during partial - load conditions.

Principle of Electronic Expansion Valve

Valve Operation: An EEV typically consists of a valve body with a movable valve element. The valve is controlled by an electronic actuator, usually a stepper motor or a solenoid - based actuator. The actuator receives electrical signals from a control unit. Based on the input signals, the actuator moves the valve element to change the size of the orifice through which the refrigerant flows. For example, if more cooling is required, the control unit sends a signal to the actuator to open the valve wider, allowing more refrigerant to flow into the evaporator.
Feedback and Control: The operation of the EEV is often based on a feedback loop. Sensors in the refrigeration system measure parameters such as evaporator temperature, refrigerant pressure, and superheat. These sensor readings are sent to the control unit, which then compares them to the desired set - points. Based on this comparison, the control unit calculates the appropriate valve position and sends the corresponding control signal to the actuator. This closed - loop control system enables the EEV to continuously adjust the refrigerant flow to maintain optimal system performance.

Features of Electronic Expansion Valve

Precision Control: EEVs offer high - precision control of refrigerant flow. They can adjust the valve opening in very small increments, allowing for accurate regulation of the refrigerant mass flow rate. This precision helps in maintaining the desired evaporator temperature and superheat with a high degree of accuracy, resulting in more efficient and stable cooling performance.[!--empirenews.page--]
Quick Response: Due to their electronic control, these valves can respond rapidly to changes in system conditions. They can open or close quickly to adjust the refrigerant flow in response to sudden load changes or fluctuations in temperature and pressure. This quick response time helps in minimizing temperature variations and improving the overall responsiveness of the refrigeration or air - conditioning system.
Energy Efficiency: By optimizing the refrigerant flow and maintaining the correct superheat, EEVs contribute to significant energy savings. They ensure that the compressor operates under more favorable conditions, reducing the energy consumption associated with compressing the refrigerant. Additionally, the ability to adapt to partial - load conditions means that the system doesn't waste energy when full cooling capacity is not required.
Flexibility in System Design: EEVs provide greater flexibility in the design of refrigeration and air - conditioning systems. They can be integrated with advanced control systems and used in a wide range of applications, from small - scale domestic air - conditioners to large - scale industrial refrigeration plants. Their ability to work with different refrigerants and operating conditions makes them a versatile choice for system designers.
Diagnostic Capabilities: Many modern EEVs come with built - in diagnostic features. They can provide information about the valve's operation, such as its current position, any faults or errors, and the history of its adjustments. This diagnostic data can be used for preventive maintenance and troubleshooting, helping to identify and address potential issues before they lead to system failures.

Types of Electronic Expansion Valve

Stepper - Motor - Driven EEV: This type of EEV uses a stepper motor to control the valve's movement. Stepper motors can provide precise positioning of the valve element. They operate by receiving a series of electrical pulses from the control unit, and each pulse causes the motor to move the valve a specific, small increment. This allows for very accurate control of the refrigerant flow and is commonly used in applications where precise temperature control is required.
Solenoid - Driven EEV: Solenoid - driven EEVs use an electromagnetic solenoid to actuate the valve. When an electrical current is applied to the solenoid, it creates a magnetic field that moves the valve element. These valves are generally simpler and more cost - effective than stepper - motor - driven valves. They are often used in applications where a less precise but still effective control of refrigerant flow is sufficient, such as in some smaller - scale refrigeration systems.

Precautions for using Electronic Expansion Valve

Proper Installation: EEVs must be installed correctly according to the manufacturer's instructions. This includes ensuring proper electrical connections to the control unit and actuator, as well as correct piping connections to the refrigeration system. Incorrect installation can lead to improper valve operation, such as incorrect refrigerant flow control or failure of the valve to respond to control signals.
System Compatibility: It's essential to ensure that the EEV is compatible with the refrigeration system's refrigerant type, operating pressure, and temperature range. Using an incompatible valve can result in poor performance, leakage of refrigerant, or damage to the valve and other system components. The valve's specifications should match the requirements of the system it's installed in.
Control System Setup: The control system that manages the EEV must be properly configured. This includes setting the correct control parameters such as superheat set - points, response times, and safety limits. Incorrect control settings can lead to sub - optimal performance or even system instability. It's important to follow the manufacturer's guidelines for programming and calibrating the control system.
Regular Maintenance: Although EEVs are generally reliable, they still require regular maintenance. This includes cleaning the valve body and the area around the valve to prevent debris from interfering with its operation. Additionally, the electrical connections and the actuator should be checked periodically for signs of wear, corrosion, or damage. Any issues should be addressed promptly to ensure the valve's continued proper function.
Power Supply Stability: Since EEVs rely on electrical power to operate, a stable power supply is crucial. Voltage fluctuations or power outages can affect the valve's operation and potentially damage the electronics. Using appropriate power protection devices, such as surge protectors or uninterruptible power supplies (UPS), can help safeguard the EEV and the associated control system.[!--empirenews.page--]

Things to consider when purchasing Electronic Expansion Valve

System Requirements: Analyze the specific requirements of your refrigeration or air - conditioning system. Consider factors such as the cooling capacity, refrigerant type, operating pressure, and temperature range. Choose an EEV that can handle these requirements and provide the necessary precision and control for your system.
Type of Actuator: Decide between a stepper - motor - driven or solenoid - driven EEV based on your application's needs. Stepper - motor - driven valves offer higher precision but may be more expensive and complex. Solenoid - driven valves are simpler and more cost - effective for applications where less precise control is acceptable.
Control and Compatibility: Ensure that the EEV is compatible with your existing or planned control system. Look for valves that support the necessary communication protocols and can be easily integrated into your system's control architecture. Consider whether the valve provides the diagnostic and feedback capabilities that you require for system monitoring and maintenance.
Brand and Reputation: Choose a reputable brand with a good track record in manufacturing EEVs. Read customer reviews and ask for recommendations from other users or industry experts to assess the quality, reliability, and performance of different models. A well - known brand is more likely to provide reliable customer service and replacement parts.
Budget: Establish a budget for the EEV purchase. The cost can vary depending on the valve's size, type, features, and brand. Consider not only the initial purchase price but also the long - term costs such as maintenance, potential replacement parts, and any impact on system energy efficiency. A more expensive valve with better quality and performance may be a more cost - effective choice in the long run if it improves system reliability and energy savings.

Terms of Electronic Expansion Valve

Valve Capacity: The maximum refrigerant flow rate that the valve can handle, usually measured in terms of mass flow rate (e.g., kilograms per second). It's an important parameter for sizing the valve to match the cooling capacity of the refrigeration system.
Superheat Control Range: The range of superheat values that the EEV can effectively control. This indicates the valve's ability to maintain the desired refrigerant vapor state in the evaporator and is a key factor in system performance and energy efficiency.
Response Time: The time it takes for the valve to change its position in response to a change in the control signal. A shorter response time is generally better as it allows the valve to quickly adapt to system load changes and maintain stable operation.
Actuator Type: Refers to whether the valve is stepper - motor - driven or solenoid - driven. The actuator type affects the valve's precision, speed of operation, and cost.
Control Signal Input: The type of electrical signal (e.g., voltage, current, digital pulse) that the valve's actuator requires to operate. It's important to ensure that the control system can provide the correct signal format to the EEV.