GD25(1")-N-3-AC220V / 2/2 way NC, NBR Seal

Details of GD25(1")-N-3-AC220V / Diaphragm 2/2 way NC, NBR Seal

The Solenoid Valve Diaphragm Type is a valve that controls the flow of liquids or gases using a diaphragm (diaphragm) and solenoid (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.

How a Diaphragm Solenoid Valve Works

Main Components

• Solenoid Coil (Electromagnetic Wire Winding): Creates a magnetic field when electrical 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 closes 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 → When no electricity, valve 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 valves).
• Easy maintenance.
• Suitable for clean fluids such as water, air.

Usage Details

• Potable water systems to control water in filters and cold water makers.
• Irrigation systems to open/close water according to schedule.
• Food/Pharmaceutical industry for precise control of clean fluids.
• Pneumatic systems to control air supply in machinery.
• Home appliances such as washing machines, coffee makers.

Tech Data GD25(1")-N-3-AC220V / Diaphragm 2/2 way NC,NBR Seal