Description This one-way check valve is designed specifically for bathroom and kitchen drainage systems. It effectively prevents backflow, ensuring that wastewater flows in only one direction. The valve is ideal for use with washing machines and floor drains, providing a reliable solution to prevent water from reversing and causing potential flooding or damage. Features -Color:Light Grey -Material:Silicone -Size:7.00X6.40X6.40cm/2.75X2.52X2.52in -High efficiency: effectively prevents water backflow, keeping your bathroom, kitchen, and washing machine drain dry and clean -Specially designed: specifically designed for drainage systems, it effectively prevents backflow and clogging, protecting your plumbing system -Versatile use: suitable for various scenarios including bathrooms, kitchens, and washing machines, making it convenient and practical -Meticulous craftsmanship: carefully crafted to ensure durability and reliability in preventing water backflow and clogging -Easy installation: simple to install without the need for professional tools, allowing for quick and setupPackage list: 2pcs x Drain valve