RFKA series thermostatic expansion valves are used to adjust mass flow of refrigerant into the evaporator while controlling the refrigerant´s superheat at the outlet of the evaporator.
They can be used for various refrigerants under all working conditions. Typical applications are refrigeration systems like freezers, ice makers, dehumidifiers as well as air conditioners and heat pumps at various evaporation temperature ranges.
FEATURES
• EXCHANGEABLE VALVE ORIFICE, EASY TO STOCK HOLDING, CONVENIENT FOR CAPACITY MATCH AND REPAIR
• THERMAL BULB UTILIZES CROSS CHARGE TECHNOLOGY, PROVIDING CONSISTENT SUPERHEAT DEGREE OVER THE WHOLE EVAPORATION TEMPERATURE RANGE
• VALVES WITH MOP FUNCTION CAN BE PROVIDED TO ASSURE RELIABLE COMPRESSOR OPERATION
• APPLICABLE IN A WIDE EVAPORATION TEMPERATURE RANGE
• RELIABLE AND CONSISTENT PERFORMANCE OF SUPERHEAT CONTROL
GENERAL SPECIFICATION
- Applicable for all common HCFC and HFC refrigerants such as: R22, R134a, R404A, R407C, R507A …
- Medium temperature TS min. / max. -40°C/+70°C
- Max. operating pressure PS: 2,1 … 3,5 MPa (21 … 35 bar)
- Installation position:
- - Preferably valve head upwards
- - Flow direction from inlet A to outlet B
- Certifications: UL/CSA and PED declaration
- Max. operating pressure is related to the used refrigerant
TECHNICAL PARAMETERS
• RFKA series angle shape valve
• Inlet 3/8” flare connection
• Capillary tube length 1,5m
• Equalization port:
- RFKA flare/flare type with ¼“ flare connection;
- RFKA flare/solder type with 6mm solder connection
