PVC internal waterstops with valves are used in concrete structures to prevent water infiltration through construction joints. They are installed during the concrete pouring process and function as a physical barrier that prevents the passage of water through the joint. The valve mechanism in the waterstop allows for the controlled release of water pressure that may build up in the joint due to hydrostatic pressure or other factors. This helps to maintain the integrity of the waterstop and the concrete structure overall. The PVC material provides flexibility and durability to withstand the stresses of construction movement, temperature changes, and chemical exposure.
