... of normally closed,two-channel trait,acted as a pilot valve, It usually is applied in the liquid refrigerant or exhausting ... shut systematic pipe line when replacing the electrom agnetic coilsThe valve can evaporate normally ,be opening or closing,under the condition ... orderOur products can substitute for congeneric import products,such as DANFOSS,CASTEL,PARKER,EMERSON,SAGINOMIYA and so on Solenoid ...