Solenoide Valve Model: WK20L(3/4")-N-4-AC220V / Type Diaphragm 2/2 way NC,NBR Seal, For Vacuum, Water,

Product Details of Solenoid Valve Model : WK20L(3/4")-N-4-AC220V / Diaphragm Type 2/2 way NC,NBR Seal,For Vaccum, 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 → Water pressure is equal on both sides of the diaphragm → Diaphragm closes the valve.
• Electricity applied → Plunger is pulled up → Pilot port opens → Pressure above the diaphragm decreases → Fluid from below pushes the diaphragm up → Valve opens.

Normal Open (NO) – Normally Open 

• The principle is similar but reversed pressure side → Without 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 valves).
• Easy maintenance.
• Suitable for clean fluids such as water, air.

Usage Details

• Potable Water System: Controls water in filtration systems and cold water dispensers.
• Irrigation Systems: Opens and closes water according to schedule.
• Food/Pharmaceutical Industry: Used with clean fluids that require precise control.
• Compressed Air (Pneumatic) Systems: Controls air supply in machinery.
• Home Appliances: Such as washing machines, coffee makers.

Tech Data Solenoid Valve Model : WK20L(3/4")-N-4-AC220V / Diaphragm 2/2 way NC,NBR Seal,For Vaccum, Water,