Plugs or Caps

Bulkheads are used either for a temporary period, to pressure test a pipeline for acceptance, or as a dead end of a pipeline, which may be permanent or extended in the future. The most common bulkhead designs are dished and flat plate type, which can be supplied for either temporary or permanent installations.

The flat plate or concrete type is the most commonly used permanent bulkhead to seal the end of a pipeline. This bulkhead requires external bracing in the form of either a concrete thrust block or a beam type bracing. The jointing assembly generally consists of a standard spigot and bell ring.

The dished bulkhead is recommended for site conditions were an external bracing system is impractical. This mechanically restrained bulkhead type is part of an internal system, that relies on the frictional drag forces developed between the pipe and the backfill material due to unbalanced forces in the pipeline. The jointing assembly commonly consists of a clamp-type harnessed joint. Flat plate type bulkheads may also be designed in combination with mechanical restrained.