OVERVIEW:
FDF solenoid valve is a kind of valve with miniflow, hard hermetic seal and normal close. It can be used as deforestor, flow direction controller, or on/off controller in refrigeration system. At present it is used widely in refrigerator, air conditioning system and dehemindifier etc.

WORKING PRINCIPAL:
FDF solenoid valve is built with a free moving steel plunger, and magnetic coil. When current is introduced, a magnetic field is formed, which draws the plunger, and opens on the gravity of the plunger and the elastic force of it's top spring.