An OEM plastic solenoid valve is a type of electrically controlled valve that regulates the flow of fluids. The primary function of the valve is to control the opening and closing of a passage based on the activation of an electromagnetic coil. The "OEM" designation refers to a customized or proprietary version of the solenoid valve designed by the original manufacturer, tailored to meet specific needs of a particular application or customer. The valve body and parts are typically made of durable plastic materials, offering various advantages over traditional metal valves, including lower weight and superior resistance to corrosion and certain chemicals.