Speier drain connectors connect waterproof membranes with rainwater drains, ideal for low walls. Compatible with PVC membranes, they have a long tang to cross walls and ensure watertightness. Speier drain connectors are used to connect roof membranes with rainwater drains placed close to walls and can be positioned either horizontally or vertically. The special diameters with which they are produced make them compatible with corner connecting elements fitted with watertight gaskets.