Coil of ADF-M solenoid valve is hermetic by plastic．It features moisture proor，antiviberation＆anti－corrosive．All parts are made by stainless steel．It can use for ammonia and freon reklgerating system．Also it can use for pneumatic hydraulic and water supply system．

ADF series solenoid valve is pilot type valve．When energized the coil，it lead a magnet and pick up plug，open the small orifice，course to pressure in upside of valve reduced．So the pres sure difference happen both side of diaphragm． The pressure difference lift diaphragm to open the main Orifice．When main orifice open，dia phragm shouldn’t drop even if pressure difference both side of diaphragm exist too，because of flow inertia function．When coil deenergized，plug drop to close small orifice because of reset spring． Media flow to upside of valve through throttle orifice．Then balance pressure both side of diaphragm，so diaphragm return to close the mail valve．

1.The valve must install in horizontal pipe line under vertical position. The flow direction must be meet the arrow direction in valve boby.
2.Installing position should be low viberation.
3.Must install filter before solenoid valve in order to prevent block throttle port and lead to no function.
4.The coil input power must meet rated input power showed on the label.
5．System operating pressure must be meet open valve pertormance．
6．Departure coil from valve when en ergized in coil is limited in order to avoid damage the coil．
7．According to valve with manual function．It must turn manual bar to open the vaNe bemre doing system air tightness， in order to avoid to damage diaphragm．