Solenoid Valve with Check Function

Product Features of Solenoid Valve with Check Function: 　　Prevents reverse flow of medium from the outlet end; 　　Unique design, space-saving; 　　Piston structure, excellent sealing; Coil, not easily burned out. Main Technical Parameters of Solenoid Valve with Check Function: 　　Diameter range: DN1～DN500. 　　Control method: Normally open, normally closed, self-retaining. 　　Power supply voltage: DC12～220V; AC24～380V. 　　Valve body material: Cast steel, brass, stainless steel. 　　Applicable media: Water, gas, oil, corrosive fluids, etc. 　　Pressure range: 0.01～200MPa 　　Temperature range: (-200—50) ～ (+120, +200, +300). 　　Medium viscosity: Less than 50C St (customizable if higher). 　　Protection performance: Dustproof, waterproof, explosion-proof. Select according to working conditions. 　　Wiring method: Terminal block type; Lead wire type; Plug type. 　　Connection method: Flange, welding, internal thread (external thread and special interfaces can be customized or adapted with connectors). Main Technical Parameters of Solenoid Valve with Check Function: 　　Product specifications: DN1~DN1000 　　Valve body material: Cast iron, cast steel, stainless steel. (Cast iron and cast steel cannot be used with corrosive fluids) 　　Applicable media: Water, gas, oil, steam, gas, corrosive fluids, etc. 　　Temperature range: -196℃~ +550℃ 　　Medium viscosity: Less than 50C ST (customizable if higher) 　　Protection performance: Waterproof, explosion-proof (Exd II CT5), corrosion-resistant 　　Wiring method: Terminal block type, lead wire type, plug type 　　Control method: Normally open, normally closed, self-retaining 　　Power supply voltage: DC12~127V; AC36~380V 　　Connection method: Internal thread, flange (external thread and special interfaces can be customized or adapted with connectors) 　　Leakage: Zero Working Principle of Solenoid Valve with Check Function: 　　Normally closed: When the coil is energized, the pilot valve core is attracted, the pilot hole opens, the upper chamber of the valve depressurizes, and the piston is pushed by the medium pressure in the lower chamber, opening the solenoid valve. 　　　　　When the coil is de-energized, the pilot valve core resets by spring force, the pilot hole closes, and the upper chamber of the valve pressurizes through the piston throttle hole and the reset spring's thrust, closing the solenoid valve. 　　Normally open: When the coil is energized, the pilot valve core resets by spring force, the pilot hole closes, and the upper chamber of the valve pressurizes through the piston throttle hole and the reset spring's thrust, closing the solenoid valve. 　　　　　When the coil is de-energized, the pilot valve core resets by spring force, the pilot hole opens, the upper chamber of the valve depressurizes, and the piston is pushed by the medium pressure in the lower chamber, opening the solenoid valve. 　　Check function: When the outlet pressure exceeds the inlet pressure, the medium does not reverse conduct.