Firestop coupling from ProVent Systems
ProVent Systems’ ProSet embedded firestop coupling can control drain-waste-vent pipe expansion and contraction problems in multistory buildings when it is anchored into a concrete floor or restrained using a special ProSet riser clamp. ProVent’s EZ Mechanical Flex coupling also can accommodate any movement of DWV pipe between two floors through the flexibility of its 3” and 4” sizes.
ProVent Systems. www.proventsystems.com