| Electronic Expansion Valve |
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The flow of refrigerant is modulated through a nozzle measuring over 1/2 inch in diameter, and the internal mechanism is suspended on calibrated springs with ball bearings. Control is very precise, stable and reliable over time, eliminating the risk of locking. The E2V is entirely manufactured using laser welding and quality materials (AISI 316L and high preformance plastics), and each piece is functionally tested.
Given the current increase in installation using high pressure refrigerants, the E2V series has been designed to ensure operation up to a 30 bar differential and a 40 bar suction pressure thanks to the high thrust force. In addition, the expansion capacity in both directions allows the layout of the refrigerating circuit to be smplified in reverse-cycle heat pumps and reduces installation costs: only one expansion valve is required, and non-return valves are not needed. |
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| Expansion Valve Driver |
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- EVD200: Independent EEV driver module with pLAN protocol to be connected to pCO system controllers. This is the ideal driver for applications where the functions of the unit are more important than the cost. It manages the most common EEV's available in the market up to large cooling capacities (>50 kW).
- EVD300: Similar to EVD200 but more advanced and can operate stand-alone. This driver module comes with RS485 protocol for connection to a PlantVisor supervisory system. There is also the possibility to configure the 4 to 20 mA input for positioining EEV proportionally to the input itself.
- EVD400: CAREL's most advanced and versatile solution for the control and positioning of electronic expansion valves. Some versions come with the communication protocols pre-set for connection to the µC and pCO controllers (tLAN), pCO (pLAN) and supervisor or PlantVisor (RS485), and can manage a vast range of EEV's made by different manufacturers.
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