General description This 3X Brass Automatic Air Vent Valve features high temperature resistance, rust protection, and reliable sealing. The exhaust mechanism is dependable, with individual components cast with high precision. This valve is a great replacement for broken units and is easy to install due to its standard 1/2 inch male thread. 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 3 x Air Vent Valve Other information Note: Light reflection and different displays may cause the color of the item to differ slightly from the real thing.