... customers 4.Various types Description of DACHENG PVC Water Stop PVC water stops are used in concrete joints subjected to ... watertight diaphragm that prevents the passage of fluid. The water stop must be designed and installed properly to accommodate joint ... concrete structure such as Dams, Canals, Over Head/Under Ground Water Tanks, Swimming Pools, Basement, Bridges, Road Embankments, Retaining Walls ...