Feature: 1. SEALING DESIGN: Automatic air intake and exhaust valve, with low pressure dynamic sealing design, good sealing performance and less leakage. 2. PP PLASTIC: The exhaust valve is made of excellent PP plastic with good toughness, corrosion and aging resistance, has a long service life. 3. LARGE DIAMETER: The valve body adopts pneumatic straight through channel design, with large inlet and outlet size, and the flow rate is large. 4. STANDARD SIZE: The exhaust valve has standard G2 lower port male thread and G1 upper port inner diameter, stable and firm in connection. 5. EASY TO INSTALL: Equipped with a gasket, white inner tank and an accessory, this exhaust valve is easy to install, compact and simple to use. Specification: Item Type: Air Intake Exhaust Valve Material: PP Product Size: Approx. 27.3 x 10 x 10mm / 1.1 x 0.4 x 0.4in Bottom Male Thread: G2 Upper Inner Diameter: G1 Application: Intake and Exhaust Weight: Approx. 557-588g / 19.6-20.7oz. Package List: 1 x Exhaust Valve1 x Gasket1 x White Inner Tank1 x Accessory