Sealing of branch pipe into side of large-dia. concrete pipe - involves reinforcing plates anchored in grout inside main pipe and liner pipe sealed into branch pipe

摘要

The system is used for the prodn. of a side branch from a concrete pipe (2). A hole may be made in the main pipe (2) and a side branch pipe (4) of smaller dia. may be inserted. The inside of the main pipe is coated with mortar or cement grout (12) and reinforcing plates (8) are placed on the outside of this mortar layer and held in place by projecting anchoring elements (10). A flange (34) welded (36) to the reinforcing plates (8) supports a short section of pipe (20) fitting inside the side branch pipe. This pipe has a groove in its OD accommodating an O-ring seal (22) preventing liq. from leaking between the two pipes The end (28) of the pipe remote from the main pipe is sharp, with a tapered section on the ID. USE/ADVANTAGE - Simple and secure sealing of branch pipe into side of large-dia. concrete pipe.