Question 1

Does an electronic expansion valve require regular calibration?

Accepted Answer

An electronic expansion valve (EEV) itself usually does not require regular calibration because its movement is controlled electronically. However, the overall control accuracy depends on the performance of the temperature sensors, pressure sensors, and controller. To maintain reliable operation, you should inspect these components periodically.

Question 2

Can an electronic expansion valve work with different refrigerants?

Accepted Answer

Yes. Many electronic expansion valves are designed to work with a variety of refrigerants, including commonly used options in commercial and industrial refrigeration systems. However, the valve capacity, pressure range, and controller settings must match the selected refrigerant.

Question 3

What should you consider before selecting an electronic expansion valve?

Accepted Answer

Selecting the right electronic expansion valve requires evaluating several factors, including cooling capacity, refrigerant type, operating temperature range, pressure conditions, and system load variation. You should also consider the valve's control accuracy, response speed, and compatibility with the controller.

Question 4

Does an electronic expansion valve need an external power supply?

Accepted Answer

Yes. Unlike a thermal expansion valve, an electronic expansion valve requires an external power supply to operate its actuator and communicate with the controller. The controller sends electronic signals that precisely adjust the valve opening according to real-time operating conditions. Without electrical power, the valve cannot perform dynamic refrigerant flow control, which may affect cooling performance and system stability.

半導體冷水機

冷水機組

高精度動態溫度控制系統

氣體溫控系統

新能源車測試溫控機Chiller

直冷式冷水機

TCU溫度控制單元

高溫熱循環機

工業冰箱

環境試驗箱

關於 LNEYA

LNEYA 視頻

半導體晶圓廠

半導體封裝與測試

原料藥 & 試驗工廠

生物製藥

新材料 | 特殊氣體

航空航天材料 | 測試

微通道 | 管式反應器

氫能產業

新能源產業

蒸餾濃縮

化學介質冷卻

低溫材料

Electronic Expansion Valve

LNEYA Thermo Refrigeration Co., Ltd. 專注於冷凍加熱溫控系統、超低溫冷水機、工業冷凍機、半導體冷水機、新能源溫控及流量控制系統等專用設備的研發與生產，產品廣泛應用於醫藥化學、半導體、新能源、航空航太等領域。