General description This 5X Brass Automatic Air Vent Valve features a standard 1/2 inch male thread, designed for pressure relief in solar heating systems. It is made of high-quality brass, ensuring corrosion resistance and durability. The valve is equipped with a reliable exhaust mechanism and precision-cast components, making it an excellent replacement for broken valves. Technical specifications Item Type: Air Vent Valve Pressure: Normal Pressure Working Temperature: Normal Temperature Shape: Diaphragm Type Flow Direction: Medium: Air Driving Mode: Automatic Model: DN15 1/2 Inch Color: Yellow Material: Brass Size: 1/2 Inch Measurement allowed error: +/- 1-3 cm Package contents 5 x Air Vent Valve