Product Details of Solenoid Valve Model : WK10(3/8")-N-4-AC220V / Diaphragm Type 2/2 way NC, NBR Seal, For Vacuum, Water,
The Diaphragm Type Solenoid Valve (Solenoid Valve Diaphragm Type) is a valve that controls the flow of liquids or gases using a diaphragm and solenoid to open and close the valve. It is commonly used in automatic systems such as plumbing systems, irrigation systems, compressed air systems, and various industries.
How a Diaphragm Solenoid Valve Works
Main Components
Solenoid Coil (Electromagnetic Wire Winding): Creates a magnetic field when electric current flows through it.
Plunger (Moveable Iron Rod): Lifted up/down by the magnetic field.
Diaphragm (Flexible Rubber/Silicone Sheet): Opens and closes fluid pathways.
Pilot Port (Pressure Control Port): A small port that helps control pressure on both sides of the diaphragm.
Operating Mode
Normal Closed (NC) – Normally Closed
No electricity → Plunger closes pilot port → Pressure on both sides of the diaphragm is equal → Diaphragm keeps valve closed.
Electricity applied → Plunger is pulled up → Pilot port opens → Top pressure on the diaphragm decreases → Fluid from below pushes the diaphragm up → Valve opens.
Normal Open (NO) – Normally Open
The principle is similar but reversed in terms of pressure → When no electricity, valve is open; when electricity applied, valve closes.
Advantages of Diaphragm Valves
Rapid opening and closing.
No leakage (because the diaphragm does not wear out like other types of valves).
Easy maintenance.
Suitable for clean fluids such as water, air.
Usage Details
Drinking Water System – Controls water in filtration machines and cold water makers.
Automatic Irrigation Systems – Opens and closes water according to schedule.
Food/Pharmaceutical Industry – Used with clean fluids that require precise control.
Pneumatic Systems – Controls air supply in machinery.
Home Appliances – Such as washing machines, coffee makers.
Technical Data Solenoid Valve Model : WK10(3/8")-N-4-AC220V / Diaphragm Type 2/2 way NC,NBR Seal,For Vaccum, Water,