EK15(1/2")-2-AC220V / 2/2 way NC,NBR Seal,For Water, Air,Gas Li

Details of EK15(1/2")-2-AC220V / Diaphragm Type 2/2 way NC, NBR Seal, For Water, Air, Gas Li

Diaphragm 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 water supply systems, irrigation systems, compressed air systems, and various industries.

Working Principle of Diaphragm Solenoid Valve

Main Components

• Solenoid Coil (Electromagnetic Wire Winding): Creates a magnetic field when electric current flows through it.
• Plunger (Movable Iron Rod): Moves up and down with the magnetic field.
• Diaphragm (Flexible Rubber/Silicone Sheet): Opens or closes the liquid passage.
• 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 moves up → Opens pilot port → Top pressure on diaphragm decreases → Liquid from below pushes diaphragm up → Valve opens.

Normal Open (NO) – Normally Open

• Similar principle but reversed pressure side → No electricity, valve is open; with electricity applied, valve closes.

Advantages of Diaphragm Valves

• Rapid opening and closing
• No leakage (because the diaphragm does not wear like other types of valves)
• Easy maintenance
• Suitable for clean liquids such as water, air

Usage Details

• Potable water system – Controls water in filtration machines and cold water makers.
• Irrigation systems – Opens and closes water according to schedule.
• Food/Pharmaceutical industry – Used with clean liquids that need precise control.
• Pneumatic systems (compressed air) – Controls compressed air supply in machinery.
• Home appliances such as washing machines, coffee makers

Tech Data EK15(1/2")-2-AC220V / Diaphragm Type 2/2 way NC, NBR Seal, For Water, Air, Gas Li