The Central Vacuum Reverse Suction Hose (Part #CV711H) is a specialized service hose used to back-suck stubborn debris clogs out of central vacuum pipe runs. Instead of pushing a blockage further into the system, it lets a technician reverse the airflow and pull the obstruction back out through the inlet, clearing jams that ordinary suction cannot.The hose fits most central vacuum valves and is designed to pair with Desco's Clean Obsessed #CO711 portable 120' H2O canister, a high-water-lift unit that generates the powerful reverse suction needed to dislodge packed debris. Together they form a fast, no-dismantle method for clearing clogs in walls and pipe networks. Function: Reverse-suction clog removal for central vacuum pipe Fitment: Fits most central vacuum inlet valves Pairs with: Clean Obsessed #CO711 portable 120" H2O canister Use: Pulls debris clogs back out instead of pushing them deeper For service technicians who clear central vacuum blockages on the job, the CV711H reverse suction hose (SKU: CV711H) is an efficient tool that saves time and avoids tearing open walls.