1 This valve facets hot temperature resistance, rust protection, reliably sealing 2 The exhaust mechanism is very dependable and the individual elements are solid with high accuracy three The thread length is common 1/2in, clean to install 4 This short exhaust air management valve is great replacement of the damaged one 5 Made of superb brass material, corrosion resistant, durable Condition: 100 percent Brand New Item Type: Air Vent Valve Pressure: Normal Pressure Working Temperature: Normal Temperature Form: Diaphragm Type Flow Direction: One Direction Medium: Air Drive Mode: Automatic Model:DN20 3/4 inch Colour:yellow Material:brass Size:3/4 inch Package Contents: 1 x Air Vent Valve Only the above kit content, other products are usually not incorporated Note: Light reflection and assorted exhibits may cause the color of the object in the picture somewhat diverse from the genuine thing The size allowed error is +/- 1-3cm