Solenoid Valve Model: WK15(1/2")-N-4, AC220V, Type K Diaphragm 2/2 Way NC, NBR Seal, For Vacuum, Water

Product Details of Solenoid Valve Model: WK15(1/2")-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.

Working Principle of Solenoid Valve Diaphragm Type

Main Components

• Solenoid Coil (Electromagnetic Wire Coil): Creates a magnetic field when an electric current flows through it.
• Plunger (Moving Iron Rod): Lifted up/down by the magnetic field.
• Diaphragm (Flexible Rubber/Silicone Sheet): Opens and closes fluid channels.
• Pilot Port (Pressure Control Port): A small port that helps control pressure on both sides of the diaphragm.

Operation Mode

Normal Closed (NC) – Normally Closed 

• No electricity → Plunger closes pilot port → Pressure on both sides of the diaphragm is equal → Diaphragm closes valve.
• Electricity applied → Plunger is lifted up → Opens pilot port → Pressure above the diaphragm decreases → Fluid from below pushes the 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 Valve

Usage Details

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

Tech Specifications Solenoid Valve Model: WK15(1/2")-N-4, AC220V / Diaphragm Type 2/2 way NC, NBR Seal, For Vacuum, Water,