Product Description Used for frequency conversion air condition to realize the automatic controling of refrigerant flow rate , thus to make air conditioning system to work in the best situation and realize fast freezing , temperature precision controlling and electric saving . Product Feature Rated voltage : DC12V±10% Coil insulation resistance : above 100MΩ Driving current : 0.25A per Phase Excitation form : 1~2 phase excitation ( 30-90 pulse ) , single phase driving Coil insulation class : E Refrigerant : R22 and R407C Environment temperature : -30~+60°C Medium temperature : -30~+70°C Max ambient humidity : Less than 95%RH Working pressure range :0~2.26MPa Full stoke pulse : 500 On-valve converse pressure : 1.47MPa(mini) On-valve pulse :32±20 Life :100000 times Coil temperature rise : Less than 55°C