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Orifice Valve No. 4



Orifice Valve for Thermostatic Expansion Valve series RFKA

RFKA series thermostatic expansion valves are used to adjust mass flow of refrigerant into the evaporator while controlling the refrigerant´s super-heat at the outlet of the evaporator. They can be used for various refrigerants under all working conditions. Possible applications are refrigeration systems like freezers, ice makers, dehumidifiers as well as air conditioners and heat pumps at various evaporation temperature ranges.

General specifications:

Applicable for all common HCFC and HFC refrigerants such as: R22, R134a, R404A, R407C, R410A, R507

Applicable medium temperature: -40C +70C

Applicable ambient temperature: -35C +55C

Relative humidity: 0 - 100% RH

Maximum working pressure: 3.5MPa

Certifications: PED


Thermal bulb utilizes cross charge technology, providing equal superheat degree over the whole evaporation temperature range

Thermal bulb utilizes cross injection technology, and the whole vaporizing temperature range share the same superheat degree

Valves with MOP function can be provided to prevent damages to compressor motor caused by excessive evaporation pressure

Wide vaporizing temperature range

Stable performance of super-heat adjustment

No.  Available:

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