The primary feature of this PVC socket-end resilient seated gate valve is the integration of specialized sockets at both ends of the valve body, designed specifically to establish a direct socket connection with PVC pipelines. Installation is exceptionally convenient, requiring only the direct insertion of the PVC pipes into the sockets, where rubber sealing rings are positioned to achieve a highly reliable, leak-free seal. Distinct from traditional flanged connections, this method is recognized as a flexible or stress-free connection. Its core advantage lies in allowing an appropriate amount of expansion and contraction where the pipeline meets the socket, effectively compensating for pipeline length variations. Furthermore, this mechanism eliminates material stress caused by thermal expansion and contraction, safeguarding the long-term structural integrity of the PVC pipes. It is widely utilized across municipal water supply and drainage networks, high-rise buildings, residential complexes, petroleum industries, power plants, and environmental engineering sectors.