PH15(1/2")-3-6-DC24V / 2/2 way NC Diaphragm, Stick PTFE on Rubber Dia

Details of PH15(1/2")-3-6-DC24V / Diaphragm 2/2 way NC, Stick PTFE on the Rubber Dia

The 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 Steel Rod): Moves up and down with 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.

Operation Mode

Normal Closed (NC) – Normally Closed

• No electricity → Plunger closes pilot port → Pressure on both sides of the diaphragm is equal → Diaphragm closes the valve.
• Electricity applied → Plunger is pulled up → Opens pilot port → 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 open, with electricity valve closed.

Advantages of Diaphragm Valves

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

Usage Details

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

Tech Specifications PH15(1/2")-3-6-DC24V / Diaphragm 2/2 way NC, Stick PTFE on the Rubber Dia