Electronic Liquid Expansion Valve

Therefore the valves are especially suitable for liquid injection in dry evaporators where the superheat at the evaporator outlet follows the evaporator load proportionally. In simplest terms the expansion valve resembles a normal valve that has been modified to handle the flow of cryogenic fluids.

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Electronic liquid expansion valve. Electronic expansion valves by contrast are very well suited to the task. The current range is available with different capacities and can be used with all common refrigerants R410A R407C R404A R134a R22. Electronic Liquid Expansion Valve Type E4FS-DN PORT SIZE 34 - 4 25MM - 100 MM FOR AMMONIA R-22 R134A 507 R404A AND OTHER REFRIGERANTS FEATURES Variable flow pilot technology Positive shut-off on power failure with PTFE seat Equipped with manual opening stem Unique expansion plug design reduces wiredraw and provides linear flow characteristic Two.

The electronic valve stops refrigerant flow when the compressor stops. These types of expansion valves control the flow of refrigerant entering a direct expansion evaporator. Low super heat higher evaporating pressure and better COP The advantages of an electronic superheat controller are obvious.

The innovative RCD Refrigerant Cycle Diagnostic system for particularly precise control of the refrigerant circuit with an electronic expansion valve enables high COP figures of up to 47 to be achieved in the compact appliances Vitocal 343-G and Vitocal 333-G in accordance with DIN EN 14511 with brine 0 Cwater 35 C. Find even more on our product animation YouTube playlist. This type of metering device is able to operate well when the load fluctuates and hence is suitable for use in air conditioning system.

They do this in response to signals sent to them by an electronic controller. TS series electronic expansion valves are designed for use in air conditioning and refrigeration systems or in heat pumps. The expansion valve or JouleThomson valve as it is often called is an important component in any liquefaction system although not as critical a component as the others mentioned in this section.

They are much more sophisticated and allow the refrigeration system to operate much more accurately and efficiently. Thermostatic expansion valve without solenoid valvee. When functioning as an expansion valve ONOFF control is used.

Electronic Expansion Valve Series LPF LPF series Electronic Expansion Valves are especially designed for use in ref. The electronic ONOFF valve is actually an electronically controlled solenoid valve that functions both as an expansion valve and as a solenoid valve. The valve design uses uni-polar drives and different control.

During one cycle period typically 6 seconds the valve is opened and closed once. Consequently an electronic expansion valve can drastically reduce ener-gy losses due to refrigeration unit ONOFF cycles. The flow is controlled by the pressure in the evaporator.

Multifunction capability as expansion valve hot gas bypass suction gas throttling head pressure liquid line actuator and other applications systems. In many cases theses requirements cannot be fulfilled adequately with standard thermostatic expansion valves. The valve controls the automatic adjustment of refrigerant flow rate and makes the system work under optimized conditions for the purpose of fast cooling or heating precise temperature control and energy saving.

EX4-EX8 Stepper Motor Driven Valves. Thermostatic Expansion Valve uses a valve mechanism to control the flow of liquid refrigerant into the evaporator coil. A thermal expansion valve or thermostatic expansion valve often abbreviated as TEV TXV or TX valve is a component in vapor-compression refrigeration and air conditioning systems that controls the amount of refrigerant released into the evaporator and is intended to regulate the superheat of the refrigerant that flows out of the evaporator to a steady value.

This prevents liquid refrigerant from migrating to the compressor when this is off. Thermostatic expansion valves regulate the injection of refrigerant liquid into evaporatorsInjection is controlled by the refrigerant superheat. Electronic expansion valves are an evolution on the thermal expansion valve.

The electronic expansion valve EEV operates with a much more sophisticated design. Youll usually see electronic expansion valves listed with the acronym of either EEV or EXV. ETS 6 is a compact and lightweight electric expansion valve.

The EX4-EX8 are stepper motor driven valves that are optimized for the control of liquid or gaseous mass flow in refrigeration systems.

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