DRAIN MANIFOLD AND DRAIN PIPE SYSTEM

摘要

PROBLEM TO BE SOLVED: To solve the problem of a drain pipe system used for a multistoried building that the drain pipe system consisting of lateral branch pipes, manifolds, and main risers, with the drain manifolds intervening in the main risers for each story and with the lateral branch pipes connected thereto, requires inspection hole couplings to be connected to the drain manifolds for the maintenance of the system, making piping work troublesome and making the space allocated to each individual house smaller by pipe space than it would otherwise be. SOLUTION: The drain manifold 1 is provided with an inspection hole 12 to eliminate the need for newly connecting an inspection hole coupling and prevent piping work from becoming troublesome. Also, a pipe space serving as a shared outdoor space 20 can be made compact.