1. This valve features high temperature resistance, rust protection and reliable sealing. 2. The exhaust mechanism is very reliable and the individual components are cast with high precision. 3. The thread size is standard 1/2 inch, easy to install. 4. This exhaust air control valve is a great replacement for the broken one. 5. Made of high quality brass, corrosion resistant, . Condition: 100% Brand New 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 Package Contents: 5 x Air Vent Valve Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.