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Product introduction of Emerson EX4-6-7-I21 (EX5-EX8-M21) electronic expansion valve

EX4 / 5/6/7/8 series stepper motor driven valves produced by Emerson Fluid Control
The door is used to precisely control the flow of refrigerant. Commonly used in refrigeration, air conditioning, heat
Pumps, industrial refrigeration processes.
This electronic control valve can be used as an expansion valve, liquid injection valve, hot gas bypass valve, evaporating pressure
Force regulating valve, crankcase pressure regulating valve, condensing pressure regulating valve or liquid level control valve.
This technical document only deals with the performance of the valve. About controllers and drive modules and sensors
Please refer to other technical documents. (See page 29).
Features
• Various applications, such as expansion valve, hot gas bypass valve, suction pressure regulating valve, condensation
Pressure regulating valve, liquid level control valve, etc.
• Fully enclosed design (no threaded joint between valve body and motor cavity)
• Suitable for all common refrigerants (HCFC, HFC) and CO 2
• Stepper motor drive
• Ultra short opening and closing time
• Very quickly from fully closed to fully opened
• High resolution and excellent repeatability
• Two-way flow performance suitable for heat pump applications
• Complete shut-off function eliminates the need for additional solenoid valves
• Fully linear flow rate change
• Wide range of capacity adjustment (10… 100%)
• Continuous flow adjustment to avoid liquid shock in the refrigeration cycle
• The motor is directly connected to the valve, which can be highly reliable
• Ceramic valve plate and valve port ensure the accuracy of flow rate and minimum wear
• Balance design
• Corrosion-resistant stainless steel valve body and joint
• European Patent No. 0743476, US Patent No. 5735501, Japanese Patent No.
28225789