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PVC Stargrip® – Series 4400

Wedge Action Bell Restraint for AWWA C900 PVC Pipe Joints (CI OD) - New Installations Only (Sizes 14" - 36")

Information

bb The Series 4400 system consists of a restraint ring that has wedges and wedge bolts along with a harness ring. The wedge action restraint ring is connected to the solid harness ring using double ended threaded rods and nuts. The system is used to restrain AWWA C900 PVC pipe bell joints with CI outside diameter.

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  • For use on ANSI/AWWA C900 CI OD PVC pipe
  • For new push-on pipe bell installations only
  • The restraint system includes a modified PVC Stargrip®, a solid harness ring, nuts, and double-ended rods.
  • The bolt circle diameter for the modified PVC Stargrip® is larger to allow extra clearance.
  • By using larger diameter rods, fewer rods are needed to achieve its rated pressure. This results in less hardware to assemble.
  • The rings, wedges, and actuating bolts are made of high strength ductile iron.  The restraint rods and nuts are made of high-strength-low-alloy steel per the requirements of ANSI/AWWA C111/A21.11
  • Please refer to the chart in the catalog for the maximum bell outside diameter that the rods can clear.
  • The safety factor is twice (2:1) the product pressure rating.
  • The standard color for the rings is Coral Red.

Restraint for PVC push-on bells (AWWA C900 CI OD) shall incorporate the use of a wedge action restraint ring and a solid harness ring into its design. Wedge action mechanisms shall be integrated into the design of the restraint ring. As the mechanisms are activated, multiple points of resistance shall be imparted onto the pipe and increase in resistance as internal pressure grows. After burial of the restraint mechanism, joint flexibility shall be maintained.

The actuating bolt shall be threaded into the restraint ring and have a 1-1/4″ hex operating nut. The actuating bolt system shall have a torque-limiting head designed to break off at preset torque levels, thus insuring proper action of the restraining device. After the torque-limiting head has broken off, a secondary hex head shall remain to facilitate the removal and re-assembly of the restraint ring. Rings, bolts and wedges shall be manufactured of high strength ductile iron in accordance with ASTM A536 Grade 65-45-12 requirements.

All sizes shall have a minimum safety factor of 2:1 (i.e. twice the product pressure rating as stated in most current catalog). The restraint mechanism shall be Star® Pipe Products, PVC Stargrip® series 4400 or approved equal.

*Please refer to the catalog for further details and specifications.

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