1、Excellent Sealing: This valve is well sealed with excellent craftsmanship, which aims to reduce leakage and make the process of exhausting more stable. 2、High Flowing Rate: The valve body is designed with pneumatic direct flowing channel, with large inlet and export size and high flowing rate, so that you can have a great experience of using it. 3、PP Material: Our valve is made of PP material, which is strong and durable, and can be applied for a long term under normal operation and use. 4、Easy to Install: This valve is very easy to install, with G1 lower male thread and G1/2 upper female diameter, light weight and very friendly to novices. 5、Applicable Scenarios: Our valve is suitable for use in residential, residential and office buildings as well as some industrial systems and is very versatile. 1 x Automatic Air Vent Valve1 x Washer1 x White Inner Liner1 x Accessory Item Type: Automatic Air Vent ValveMaterial: PPSize: Approx. 20 x 8.5 x 8.5cm / 7.87 x 3.35 x 3.35in Weight: Approx. 313-327g/11- 11.5ozBottom Port External Thread: G1Top Port Inner Diameter: G1/2Use: Inlet and exhaust valve