If your central heating or irrigation sprinkler system isn't working correctly, it could be down to the solenoid valve. faulty with this , fast acting 12V -style replacement which is suitable for use in water and low viscosity fluid applications. The solenoid has 1/2 inch diameter connectors. Please note it is not suitable for use with systems. Features - Brand: UEETEK. - Color: White. - Material: Metal and plastic. - Size: Approx. 8.8x7.7x3.9cm. - Type: Diaphragm. - Operation Mode: Normally closed. - Usage: water and low viscosity fluid. - Made of metal and plastic, our solenoid is durable, and practical to use. - faulty with this , fast acting 12V -style replacement which is suitable for use in water and low viscosity fluid applications. - The solenoid has 1/2 inch diameter connectors. - With it, you can easily control the flow of water. - This liquid would make a great addition to your robotic gardening project. Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Package list: 1 x UEETEK 1/2 Inch 12V Electric Solenoid for Water