Before diving into the details of Chinese OEM manufacturers, it’s important to understand what a plastic solenoid valve is. A solenoid valve is an electromechanically operated valve that controls the flow of fluids (liquids or gases). The valve opens or closes in response to an electric current applied to a solenoid (an electromagnet). The "plastic" variant refers to the valve housing and components being made of durable, corrosion-resistant plastics, making them ideal for specific applications like chemical processing, food and beverage, water treatment, and medical equipment.