1. What is a pressure valve (inlet valve) and a non pressure valve (drain valve)?
A pressure valve is also called an inlet valve, and a non pressure valve is also called a drain valve. Pressure means there is water pressure, and non pressure means there is no water pressure. Pressure valves are suitable for water pressure of 0.02~0.8Mpa, and non pressure valves are suitable for water pressure of 0~0.01Mpa. If electromagnetic valves are not used within the normal pressure range, they will not work properly! Generally speaking, pressurized water is used for connecting tap water, while non pressurized water is used for draining water from water tanks, towers, and similar containers. But the difference in size and height of the water tank is not absolute. To put it more clearly, the water flows in a jet shape with pressure, while the weak flowing water uses no pressure. Because we cannot have a specific understanding of the user environment, we only provide reference standards, and you need to choose the specific ones yourself. One special point to note is that AC220V pressure free valve should be used with caution. This type of valve may experience vibration and noise, and diaphragm type solenoid valves with alternating current and pressure free models currently have this problem, which cannot be solved temporarily.
2. How to achieve automatic control?
The product is very simple. When it is powered on or off, it will be connected and disconnected. If you want to achieve automation through PLC or other controllers, please connect the controller yourself to solve the problem! Commonly used, different functions can be achieved through temperature control, time control, light control, liquid level control, and other controllers matched with solenoid valves.
3. What are normally open and normally closed?
The electromagnetic valve is a normally closed type, which is commonly used when it is powered on and water is cut off. The electromagnetic valve is a normally open type, which is less commonly used when it is powered on and water is cut off. Please purchase according to your own needs.
4. Is the coil heating up?
The solenoid valve is made of pure copper coil, and it is normal for it to generate heat during long-term operation. Please use it with confidence.
5. Is the solenoid valve equipped with other accessories as standard?
The plastic solenoid valve is a separate solenoid valve. If you need a coil protection cover and a spring, please take the link below and use your shopping cart to take a picture together; The solar solenoid valve and copper solenoid valve coil protection cover are standard and do not need to be purchased separately. If you need other accessories, please find the corresponding link in the store and take a photo with your shopping cart.
6. Special instructions
There are three types of coil covers: black, white, and gray, which may vary at times and do not affect performance. The actual shipment shall be based on the color of the packaging of the batch of physical products produced. If you are particularly concerned about this, please contact the waiter before taking the photo to confirm the color of the batch of covers. In addition, the terminal blocks are tin/silver plated, which may turn black in the air for a long time. The coil holder is treated with iron zinc plating, and there may be slight pitting in the parts stored for a long time, which does not affect the wiring performance and use.
Technical Parameters
Type: Normally Closed (Open when energized, closed when de-energized)
Body Material: Plastic
Optional Inlet/Outlet Joint: DN10(G3/8), DN15(G1/2), DN20(G3/4)
Optional Voltage: DC6V, DC12V, DC24V, AC12V, AC24V, AC110V, AC220V
Power: 5W
Working Pressure: 0-0.01MPa (Non Pressure Type), 0.02-0.8MPa (Pressure Type)
Meduim Temperature: 0-90℃ (Pure waler and tap waler, not suitable for acid-base, thickhauds and al oinor houdis)
DN10(G3/8) External Thread Plastic Solenoid Valve
Total Length: 68.5mm
Total Height: 60mm
Inlet/Outlet Inner Diameter: 11mm
Inlet/Outlet Outer Diameter: 16mm
Error: ±1mm
DN15(G1/2) External Thread Plastic Solenoid Valve
Total Length: 84.5mm
Total Height: 57.5mm
Inlet/Outlet Inner Diameter: 14mm
Inlet/Outlet Outer Diameter: 20mm
Error: ±1mm
DN20(G3/4) External Thread Plastic Solenoid Valve
Total Length: 72.5mm
Total Height: 57mm
Inlet/Outlet Inner Diameter: 19.5mm
Inlet/Outlet Outer Diameter: 26mm
Error: ±1mm

Solenoid Valve x 1