Features The one-way check valve is made of PVDF (polyvinylidene fluoride) material, which is strong, wear-resistant and durable The check valve nozzle is designed with a pagoda-shaped slit, which is non-slip, non-toxic and airtight, and has good adsorption performance The one-way check valve is easy to install and convenient to unscrew and replace Normal performance at 25℃~60℃, strong resistance to acid, alkali and salt corrosion Widely used in auto parts, machinery, home appliance, agriculture industries, etc. The check valve is suitable for liquid system to prevent liquid backflow or for pneumatic system to prevent compressed air backflow Specification: Item Type: Check Valve Shell: PVDF (polyvinylidene fluoride) Tightness: For VITON fluorine rubber membrane 1/8 inch: Normally suitable for soft tubing with an inner diameter of about 3-3.5mm/0.12-0.13 inch 3/16 inch: Normally suitable for soft tubing with an inner diameter of about 4-5mm/0.15-0.2 inch 1/4 inch: Usually suitable for soft rubber hoses with an inner diameter of about 6-7 mm/0.2-0.3 inch Package list: 1 * Check Valve Package List 1 x Check Valve