The hydraulic angle check valve produced by Chinese faucet factories is typically made from high-strength stainless steel or zinc alloy. The valve core may be made of durable ceramic materials to extend its lifespan. It is mainly used to prevent water back flow, ensuring one-way water flow in the plumbing system. It also has the function of adjusting water pressure. Suitable for both industrial and household water supply systems, it must be installed according to the directional markings to ensure one-way flow. Regular checks of the seals and spring components should be performed, along with cleaning any accumulated dirt or debris.