Connection system for push joint valve and fittings

In combination, a push joint adapter connected to a push joint pipe fitting in a pipeline, the combination comprising:

• the push joint pipe fitting including a socket;
• and
• the push joint adapter including:
• an insertion section inserted into the socket of the push joint pipe fitting in an interference fit,
• a pipeline section connectable with the pipeline,
• a collar disposed between the insertion section and the pipeline section, and
• a restraint ring assembly coupled with the push joint pipe fitting and including a restraint ring positioned on the pipeline section and engaging the collar and a restraint rod connected to the restraint ring at one end and to the push joint pipe fitting at an opposite end.

A push joint adapter assembly connectable to one or more push joint pipe fittings in a pipeline, the push joint adapter assembly comprising:

• a push joint adapter including:
• an insertion section insertable into a socket of a push joint pipe fitting in an interference fit,
• a pipeline section connectable with the pipeline, and
• a collar disposed between the insertion section and the pipeline section;
• and
• a restraint ring assembly cooperable with the push joint pipe fitting, the restraint ring assembly including a restraint ring and a pair of restraint rods, the restraint ring secured to the pipeline section and engaging the collar, wherein proximal ends of the restraint rods are extended through respective openings in the restraint ring and secured with nuts on an opposite side of the restraint ring from the collar, and wherein distal ends of the restraint rods are securable to the push joint pipe fitting.